What are 4 ways a batter can reach first base?

There are 6 ways a batter can reach first base.

Base on Balls - a batter is pitched 4 balls

Hit By Pitch

Hit a single

An error in the field

Fielders choice (the fielder got another runner out instead of the batter)

If the third strike gets past the catcher the batter can run to first if he can beat the catchers throw.