What should I grow??

11:42 am in Plants by Derek

What should I grow and where is the best place to get seeds?  I am interested in things for making salads.  I have four 3″ net pots to grow stuff in and an additional 5″ net pot. Since I live by myself, I am would rather not grow a head of lettuce or something like that.  I would rather have something that keeps growing back after raiding the garden.   

I guess my question is.  Are there lettuce varieties that grow more leafy where I can take a pair of scissors, snip some off of each grow pot, to make a salad, and the stuff will grow back in a few days?  If so, what do you suggest?  I also think Cucumbers might be nice.