You need to tell us more. Do you have a light? Any kind of ventilation? What is your budget to improve your space?
This is a hobby that is going to require a certain investment of money, time, study, and effort if you want to get anything out of it. If you are handy, you can make some things yourself. I often find great bargains on grow equipment or things I can make into grow equipment. For example, I made a dual 150W cooltube set-up with 2 yard security lights ($2 each at a yard sale), a Pyrex Bake-around ($10 E-bay), a side mount electrical socket ($3), some misc plumbing parts and electrical parts I had lying around. Presto--a 300W cooltube for under $20 with a few hours labor. I need a bathroom type exhaust fan for a small tent I am purchasing. I am going to check out the Habitat for Humanity Restore place for a fan. I expect to find something that will work. You are going to have to get creative if your budget is limited, but you can do it. You will need to make your space smaller, but that can easily be done with simply built partitions ( like PVC pipe and panda film?). Check thrift stores, CL, e-bay, etc, etc for good buys on lights and other equipment. Think about making your own soil (from your garbage). Etc etc.