Age of Steam

Hey everyone! I have played AOS a couple of times, and I've set up a game tomorrow with three friends who are all first-timers.

What advice can I give them to help them avoid bankruptcy on their first game? I'd hate for one of them to get eliminated mid-game and get sidelined on their first game.

Also, any house rules/mulligans you've used if a player goes bankrupt to keep them in the game?