Having a garden doesn't have to be expensive. You need some tools but very often you can borrow, rent, and find for free (or really inexpensively) all the tools you need. We are a perfect example with lovely weed free beds (after a long winter) and very close early plantings on some of our seedlings such as carrots & onions. Then the weeds! Where did all these little things come from? Oy vey!
The best tool ever to deal with weeds in tight spaces? The lowly kitchen butter knife. Seriously. My best friend.