Credit card bonuses boost your balances quickly, in some cases a single credit card can get you more than one flight or a premium cabin flight. Get one yourself, get one for your travel companion, and you’re booking award travel in no time.
One way to think about which cards to sign up for is to look at the travel you want to do, and consider the cards with the biggest or much better than usual signup bonuses where it’s not expected the bonuses will stay around long.