I've found you can grow twenty tomatoes, corn, marigolds, and chives all in a 5x5 raised bed and get decent crops or better off of all of them. (There were cukes in there too, but they sort of got smothered, can't imagine why <lol> but even they produced some.)
Also: Pots are great for extending your garden area. Just about anything vigorous will do well in pots, such as herbs or squash or tomatoes.
And don't be afraid to go vertical. Scarlet runner beans will happily grow straight up your drainpipe, and give you loads of beautiful red flowers to admire and lots of beans to either eat young or use as dried beans.
Good luck with your garden!
Every year is an experiment. I've been gardening (organically from back when they meant it) for nearly 30yrs, and I don't think I've ever seen the same thing happen two years running. So have lots of fun!