wow that's a lot of roads.. should you ever just road to tile mode in order to connect cities and resources and stuff?
Not sure what you mean by a lot of roads. Every road I built had a purposes - mainly connecting a city that had to have it. All the other roads you are referring to were built by the AIs. I did built a road between Bombay and Zara's ivory city to speed troops...something I would like do to the East to speed troops to those guys if I decide. I have plenty of workers so alotting one to do roading for troops is fine. Otherwise, you will reach a point were you have a lot of workers.
Still, workers should mainly be doing things with purpose. Chop forest with purpose, i.e., don't just chop into anything. this is a matter of timings and stuff and I don't expect you to grasp all this now...so don't worry. (ha..I've been playing this game over 7 years now and still learn stuff)
Building mines is relative to what the city needs and can work compared to the cities food and how much you are whipping. For instance, Delhi doesn't need many mines early because it is whipping - although an early mine is nice for offset hammers on whips (don't worry about this concept now).
Eventually though, and this is key, after your initial expansion of 4 to 6 cities (which depends on land if you are a keying up a rush), you want a city to take on the brunt of research and try to grow to the happy cap working food, cottages and scientists. Usually this is your capital and you want to set it up as a Bureau cap if it is suited for it. (you can also move your Palace to a better city for Bureaucracy if your first cap is not good for it..the need to do that though depends on the type of game your are pursuing..again, something like a Space victory I want to max research so I may do it..if I'm just killing peeps I may not bother unless I need to tech up to advance units. On higher levels this is often the case)
Bureau caps ideally have a lot of river grassland and/or floodplains that you can cottage. Delhi is ok for this. Notice Bombay was working a bulk of the cottages early, but as you switch to Bureau, your cap can start taking on more of the cottages. Bureau significantly boots your commerce output from commerce tiles and thus your research.
Often, with a good capital setup, you really only need one city to take care of the bulk of your research needs. It is nice to have a high food Great Person farm at some point as well. Then other cities can primary be abused for production, ie., whipping as needed...although they can certainly grow and build during downtimes...even run specialists.
The save is just to give you a little taste of what you can do with a strong start and this is certainly one of them. I don't expect you to necessarily mirror it, but you should have no issue taking out GK and Zara easily.
On Prince level on Pangaea you can pretty much usually run the map with Horse Archers. But at minimum, you can take out a couple of nearby AIs to expand. Also, gives you lots of gold as well even with increase maintenance. After I got Currency, I've been pretty much running 100% research with no gold problems up to now.
(IMO Currency is the most important tech in the game..not everyone agrees with that,but I feel pretty strong about it)
Generally, a Horse Archer rush like this you can expand to 3 or 4 good cities while teching up to HBR..then whip/chop HAs and go attack. You are basically doing this in lieu of other expansion early.
Early on, a small empire can let you tech a little better before things like Currency as you won't overextend on maintenance costs. Long term though...say..if you want a Space game..you look to grab as much land as possible later. More land = more research.
(last note: The discussions and exercises here can serve you well I believe for some time, so I encourage you to reread stuff and ask questions. You don't even necessarily need to complete games, but rather practice certain concepts and techniques we've discussed, using other practice games you have going. Feel free to even replay turns or restart games and try again. I highly encourage you to practice Granary optimizations and whipping ...looking to max growth potential and whip overflow. Also, looking at bonuses you get from Traits or certain resources to take advantage of these hammers one way or another)
Civ IV can keep you slap happy with stuff to learn for a long time