Love Me, Love Me Not...Companion plants in the Garden

When I first started gardening, and I mean something besides just zucchini, I just planted whatever seeds I wanted directly in the ground and expected them to grow and produce the vegetables that I wanted. Sometimes they did and sometimes they didn't. NOTE TO SELF. Zucchini always produces more than you want or can use. I digress. Many that did come up were either pretty lackluster or didn't produce at all. When I began starting plants I the house first then planting the seedlings, things got better, but still not to the point where I thought they should have been. Then somebody told me that s...