how do i ask someone out?

Answer 1

The next time you talk to this person and he/she mentions an activity that they like to do that you also like to do, say "Want to go this weekend?"

Answer 2

You should just come out and do it directly. You can waste so much of your life worrying about it, when it can be done so easily. Many people like the direct approach, as it shows confidence and eagerness to do so. Also, even if it doesn't work it will be good practice for future attempts. The more you try, the better you become as is true with anything. Give it a shot, what's the worst that could happen?