Don't know enough about all of the issues or candidates?
Just vote for the ones you are informed on. It's a long ballot and there's no sense voting on issues or voting for people you don't know about.
Don't have someone to watch your kids?
Take them with you. They'll get to see your good example and they'll get a sticker. (At my polling place they even had candy for my six-year-old and a nice lady poll worker held my toddler while I voted). You might try not going with kids during busy times like lunchtime and after 5pm.