Hey Christopher, thanks for the post!
I am glad that there is still some interest in this game... which makes me want to return to the expansion quite soon...
Onwards to your questions:
Science: If on the 1st round I have 2 cogs, I can score the 4VP section? And I never use cogs again right. Meaning that I can now score either 1 or 3 Compass or tablets. Please correct me if I've misunderstood
That is entirely correct!
Vault: At game end for every 2 coins I have I score 1 point, or every 3 coins I have i score 2 VP, meaning if I have 6 coins at game end I score 4 VP? If this is so, you just keep track of total coins in the vault for each age and can use them in subsequent ages?
The vault only has space for three coins. When you aquire them doesn't matter anymore (it did in an earlier version).
Whethere you aquire them by rolling them, or by trade (someone else "gives" you their coin, while they get to use one of your resources).
Once you have coins you can use them again - by crossing them off. If for example you want to trade with a neighbor on your turn.
However, should you keep your wealth - and not use your coins (or at least not some of them), then you get one victory point at the end of the game for two unused coins. Or two victory points for a full vault.
In the expansion there will be ways to keep a larger amount of coins in the vault.. but till then, three is the limit!
PS: Be sure to post about your creation here: http://boardgamegeek.com/geeklist/174411/what-print-n-play-g...