. It is not really a spoiler.
1) Yeka should steal floodplain farm from new city and grow to pop 10+ ... generally you want 3+ cities to have big population (=10+) for generating GS soon. So there is no point in whipping theatre or anything else. There is no infra that is useful now... why Barracks?? You have 30+ turns to build it.
At this point you just need more citizens. Before you work grassland (2 food) you can always run scientists maybe.
Bigger problems are Rostov and Moscow. Working really bad tiles. Yes, maybe whip worker this turn... and clear jungle. Moscow needs more cottages right now, already working forest... in your capital this shouldn't happen if possible. Maybe even Yaroslavl should whip worker for help... because it is a bad situation. And soon Civil Service so you need to do a lot of work. And Yaroslavl doesn't have Buddhism so you don't need it for GPP (Pacifism has no effect there).
2) Make sure you win Music first. Already looks a bit risky.
3) You gave away stone to Hannibal, so building wealth is same effect. Need stone for generating failgold.
4) Missionary in capital for Taoist Monastery (+research). For workers see 1)
5) Don't know, I would build cottages and maybe change later. You have a lot of food, so beakers seem more important. I would cottage, but this isn't 100%. If you had more workers maybe I would say "farm everything". Cottage is faster. This is not game-breaking decision though.
6) Why you always want to gift tech for nothing? I think it happened with Aesthetics aswell, that's why many AI are close to Music now. You trade Aesthetics for Alpha and then keep it for 10+ turns, AI don't get it quickly. So Music could be much easier.
You should protect monopoly tech with your life. I wouldn't have given Drama to Egypt ... if he started plotting I would bribe Alex or Isa on him. And never ever give away Philosophy. In general I would stop trading with AI, you only need Calendar (maybe for Drama + money). You just help the AI for no reason with tech.
7) ~10% culture is not really pressing hard, I don't see big problem. But build theatres soon if you want. Creative-Theatres is only 25 hammers. Rostov can whip worker and finish theatre.
I gave the stupid AI nothing when I played from your save and look at the tech situation
This is 100 BC.
Spoiler :
Notice how nobody has Philosophy? It is very very important. If you want to lib Steel you need to slow them down. Keep Philosophy, stop trading so much, grow cities, improve tiles, prepare for golden age (hope you get Music), kill everyone soon.
Hence, probably it was one part of the game where I started falling behind. 
About Moscow hammers (plain forest)...It is needed to complete monastery 1 turn earlier. But I agree - I would prefer 1-2 more cottages. About Rostov...here I started to not lke this city about 5 turns ago. So, I was about whipping a worker here. Actually, for Moscow and Rostov - only Rostov worked really bad tiles during about 3 turns. Not really terrible, I hope...
Also I would note that I did it quite often in my games...and wondered afterwards why AIs was teching so fast. 
Well...here I really should pay more attention.
Also, I need note that even I solely play this game...The game itself looks like SG game where only one person plays but everyone else discuss very much. So far, it looks that I more or less listen advice and perform fine. I hope to continue this game around Tuesday. Hence, made some tests and read something, which was confirmed by this tests. I hope that now I could do tradind more effectively 
Anyway, you need to tech to them too...which means that Quechas are the only unit which is more overpowered. Anyway, Cossacks are in top 5 of UU. It was domination in ~ 1700 (in Vanilla there is no vassals). Why it was "kind of won"?..I reloaded once when I traded for Machinery and couldn't bulb Lib by GS. However, the goal is Deity (in all three version) conquest, and I think I became one step closer. Also I note that Immortal Vanilla/Wardlords is not a walk...Especially with -1 health/happy comparing to Deity BtS. Anyway, it has it is own features and really dumb AIs which makes it not really hard. The challenging part is the first 150 turns (after that either you won or lost). Probably the same will be true for Deity (cavaly rush at 500-1000 AD is kind of superior to other strategies).
Which allowed me to win Music at 325 BC. If I would ask help every 50 turns then I would feel like a university student. I must say that your advice and comments are very precise and answer my questions for 99% 
. Even early Dom or Conquest should be possible later.Good job on winning Music, game is still looking good and winnable
Ok, first thing... I think it's important to see that "friendly" Isa is completely (not completely, but 90%) useless to you. Keeping deals with Egypt should have been better. Soon you will kill 2-3 AIs and make friends like that.
Trade iron to Isa for Sugar + 6 gold? Moscow is unhappy. Don't accept copper from her, you need to build warriors for happiness.
Some micro... Yeka+Moscow working forest, could work better tiles (coast/grassland mine) ... Moscow should have a worker to build more cottages on grassland.
1) Start GA after reaching Code of Laws (-> switch into Paci/Caste System/Hereditary Rule) and make sure you can switch into Bureaucracy at the end of golden age (save 2 turns of anarchy)
2) Build wealth and put overflow into stone wonder when you get back stone... or build theatre (imho useless here).
3) aaaaaa ... don't give away or trade monopoly techs. Don't gift Isa ANYTHING except cannon damage for her cities soon. You get Code of Laws in 3 turns self-tech, why trade Music for it?
4) You should self-tech Code of Laws and start Civil Service yourself. Not wait for anyone. You are god of the map, everyone is weak. They need to trade with you, not you with them.
5) One turn into Calendar and trade Drama for it. Or just tech Code of Laws and trade that for Calendar. But it's better if you get it quickly. Just please don't trade Music or Philo.
6) 3-4 GS, imho ignore Great Merchants for now. Get first GS from "weakest" GPP city and then go to strongest. 3 GS is minimum you should get (Petersburg, Yeka, Moscow?) Rostov is weak but it could get first GS for example. That way maybe you get 4 GS.
1x Academy in Moscow
2x Education
1x Lib
Actually, bulbing Chemistry probably won't be useful. Self-tech it and lib Steel later. Should get it ~500 AD latest. Then draft Muskets and kill stuff.
Great Merchant you can get later, he would just stand around and do nothing now.
I promise I will not trade it and even will not think about it. May be it is an ijury from childhood in Wardlords Deity where everything is too fast... Especially, when I saw how you did diplo in your game, so it is really strond and good understanding of AIs.
But comments always are appreciated. Especially about mistakes (big and smalls). One small question - may be now it is time to sell Drama a little? To Hanny and other for some gold.
... Having Egypt at Pleased, you could just beg 1 gold. Actually I don't think Ramesses bribes vs you if he is pleased. Same with HC.
Yup looks good, Horses from Egypt would be nice of course... trade embargo like that is often a bad idea. Isa is useless as you see now
One "big" mistake here is the switch into OR/Slavery, I think. Only building you need is Forge (+Barracks). You can just slowbuild it. And you don't want to whip away population at this point in the game. You need strong research to get Chemistry for Steel lib. Forge, Barracks or Theatres don't help with that. Would run Paci until you reach Steel basically, then switch into Slavery+Theocracy (1 turn revolt doesn't matter).
OR can be nice if you are rushing early Oxford or building wonders, but I usually switch into OR very late, when I have 20 cities and GPP don't matter much anymore. Paci is too strong at this time of the game. Anyway, how do you want to get Great Merchant without Paci now?
1) St. Petersburg looks great. In this situation it would be very nice. You can draft 1 Musket (and later Rifle) every turn probably. Other cities can whip cannons.
2) Yes
3) GPP in GA were fine, but civic switch is a problem now. Position is still great of course. I mean, you don't "need" Great Merchant really. But it would be a much stronger attack and can make the difference between 700 AD attack and 1000 AD.
4) Probably Isa -> Alex, yup. Because Hannibal has friends and he will bribe Egypt vs you. And you can't do anything about it, because he won't talk with you
And Isa is useless. That's the kind of problems I saw when you stopped trading with him... but with big army and taking Isa+Alex you can kill them anyway, Hannibal/Ramesses are not very strong. And with all these vassals HC shouldn't be a problem. 10 cities is not much. He will probably go culture and you take him with Cannons/Artillery
Nice progress
Ramsie would talk again after some time (not one of those stubborn AIs i think), also HC will soon get 2nd horsies.
Or Zara, there are plenty east where we cannot be sure yet who connected them (or will do so).
I do not like globe, imo a waste of hammers in most games.
It's something like 300h for no unhappy, when happy resis on pangea are so plenty.
Your last GS could bulb Lib if you get compass (and wait with machinery), nice trade tech usually (and here too, 5 AIs do not know it).
Only useful for Cuirs line thou, which would be the faster way imo.
But i played enuf devils advocate in Lain's game lol ~~
Agree with Lain on trade embargos, i never agree to those when AIs want them
Well okay, maybe 1 out of 100 times..
And this time without reloads at all (in Vanilla I had one reload). I would say, that I was quite lucky with rivals and diplo (in some sence similar to this game). However, also I started to understand the whole process of preparing to Cuirs/Cavs war better. And again - I didn't have horses...In the beginning I bought horses and then captured it. This gives me another hope that step by step I am becoming prepared for Deity from Vanilla to BtS. Also, if I would play from the beginning I would put more cottages near Moscow and work them harder. Another things - growing cities to size ~10 without much infra - it is not only potential for generation of Great People, but also for whipping Cuirs/Cavs army pretty fast (especially for the initial forces). And even city with 3 farms (just 3 food without commers) can be fine enough to whip some Cuirs/Cavs.
Yup 50g for CS from Zara.
Nice example why giving in on trade embargos is bad, CS will be traded soon and you could get Feuda probably for it from Ramsy
Resis..at this point i only look for my own gains, not diplo anymore so probably 7g for clam or crabs or bananas from Ramsy, and another one of those for corn (gives +2 health). Could also get Zaras 5g for something, when in need for happy or health you have some old ones that could be cancelled like gems for Alex.
Letting them fight seems okay for now.
Workers are on small stuff currently yep, depends on individual city needs and tiles quality.
River tiles are usually worth being jungle removed.
Caste + Paci seems best, yup.
Lost track a bit on your teching plans thou
Would probably not bother with Reli spreads to AIs, all their cities have Hindu and often 2 Relis already (fail chance).
Moscow is on a hill, so it won't chain irrigation
