How many goals should I start with?

It really depends on you!

When you start out on Beeminder, unless you pay for a premium subscription you start out with three goals. That's usually plenty to experiment with and get a feel for Beeminder, and we'd suggest starting with anywhere from 1-3 goals. If you just want to start slowly, one goal is fine; if you have a few hares you want to start at once, you've got the three slots. Don't forget that you can start your goals with flat spot and/or a $0 pledge for the first week, in order to ease yourself in.

Some users will want to create their whole productivity system at once in Beeminder, in which case you might need more goals. In which case, you might want to check out the ways to get more free goals!