The save
Well, pretty peaceful, diplomatic

build up turns, though the war with Celts started right away.
Turn Log:
Preflight:
Go through our cities. Change a few builds. Aqueducts to complete when cities will not even have reached size 4-5 don't make much sense.
I also change the library in Odense to granary.
This has two reasons. First I think we can make a worker pump out of it.
Second I think leaving a culture hole might turn out beneficial later.
Maybe Gandhi will come with a settler pair to settle there later. He should know about the free space because his culture touched it earlier.
A settler pair should be quite nice to steer into a convenient location.
I don't want Stavanger to build a worker at this small size, change it to galley for now.
Ok, let's look into diplomacy:
I can get feudalism from Celts for literature and gpt. I'm pretty positive he will declare when booted, so I just do it.
That will save a bit headache with prebuilds.
I move the spear out, to not fall afoul the no teleportation rule, then I make him a little more furious by a few demands.
Boot order - he DoWs.
Fine 0% lux and every city ok.
Dial up Abe and gift him Agedincum. While I'm at it I take his 8g for map making and gift him currency.
I don't really think he will survive giving us money at some time, but anyway just for good practice (every civ gets currency).
Isa gets literature and feudalism. Idea here is that she will probably research mono. If celts should be quick to it, she may get the chance to buy it for us.
On our continent I will trade only with engineering, to set some civs up for invention.
So now look to produce some MDI.
A little bit more micromanagement and I can hit enter.
IBT:
Abe boots our troops out of Agedincum. Nice gets us further away from Celts.
Then Celts take Agedincum as was to be expected.
Engineering comes in. Peace with Mongols. Gift them construction and get republic for engineering. Then everybody on our island gets to tech parity, giving them engineering first.
That should put them all on invention.
Isa gets republic also, but not engineering currently. She may even cough up a few gold when in republic.
Turn 1 130BC:
Science to mono, but I leave it at 0% currently. We couldn't sustain 100% anyways and another library to come up. So just collect money first and do 100% later (maybe).
Disband one of our warriors in celt land. He couldn't escape a gallic. The other one captures a worker to annoy Brennus a little more. The spear tries an escape with maybe a little pillaging.
MM a little.
Turn 2 110BC:
I had our galleys out on Indian cove block now all whales for a turn. I think Gandhi will switch off these tiles and not back unless something changes in his population.
Not really important, just to do something with our galleys while waiting.
The second warrior in Celtia will also not make it - disband.
First two MDI. We need more

. But I configure Trondheim first for a 2 turn pike.
Science 100% now - still not enough money to sustain, but maybe a few coins show up.
IBT: The spear also didn't make it. A gallic was faster. But I will be able to save the newly acquired slave.
Turn 3 90BC:
Slave embarks on galley. No use getting him home. But galley with slave will be available for some bikini babe duty.
Abe has a few coins. He gets RoP for it.
MM.
Turn 4 70BC:
Nothing to do short of worker jobs and MM.
Turn 5 50 BC:
The same
Turn 6 30BC:
We are out of money. Look around to get a loan. Get 50g old from Ottomans for 3 gpt. Also sell spain engineering for 12g. Abe gets CoL for 11g.
MM
Turn 7 10BC:
Not much
Turn 8 10AD:
Celts have mono which reduces our cost, so I get it in 1 turn at reduced science. But spanish couldn't afford it despite my best effort (cost would have further reduced).
I could get it for peace, but the war happiness is worth a lot currently. So no peace, though maybe peace and RoP is an option for the attack.
Ottomans have some gold. I rather take their cash by gpt, than having them waste it on unit upgrade or such nonsense. So another 51g - 3gpt deal. Carthage gets 1gpt for 18g.
India is in anarchy. They just researched monarchy. They still are missing writing, but you can expect their research to take off now. Maybe 20-30 turns till they have map making.
Just keep in mind.
IBT:
Mono comes in. Osman is the first to have some gpt available for a tech. Sell him mono for 26gpt + change (far below value but better than nothing).
No further trades worth while (and also no use to gift mono before invention is around).
Turn 9 30AD:
Forgot to sell mono to Carthage (GLib). That cost us all of his 6g available.
First galleys leave for Entremont.
Turn 10 50AD:
Business as usual. A little MM, a little galley moving. Land our slave in America.
Seeing that Abe has hooked iron (remarkable), I sell him feudalism for 12g. Maybe he manages to get a pike so that celts can nicely suicide.
A few notes:
I'm micromanaging every turn between the cities so the MM looks quite uneven. Nothing managed to numbers like 10sh.
You may want to change this for easier play, but 3 turn MDIs just don't fit well.
I replanted already some trees. You can use civassist2 to learn which forests wont give shields anymore.
We should have even more forests especially Oslo has much too much food and too few shields. Don't hesitate to plant on irrigated grass.
I think the units currently underway to Entremont could probably do. Entremont is building Sun Tsu currently and cannot build new units.
You may want to use Lapurdum as a first stage and maybe collect another galley load there.
But differential movement really delays movement if you stage on an island.
But we want Entremont soon so that we can get at least the border expansion by the ToA, before we learn education.
OTOH we don't want to delay education.
We will probably use up our war happiness points at Entremont, beware that most cities will then be on riot. Maybe even set 10% lux before the attack.
I just landed our celt slave in America. He may want to stay on that hill for another turn (don't move to flatland you may not see gallics coming).