I just went to homedepot to get more fixtures/ cfls heres a tiny list to help
1. enough cfls for your plants, as babies they dont need much but as a bigger plant they need 3k-10k lumens, for vegging make sure their kelvins are 6500k-5500k, go for the 40 or 60 watts ones.
2. Light fixtures, home depot has them with clamps and a reflector for only 5 dollars each. They swivel every direction and can be clamped onto anything.
3. Fox farms ocean forest soil. If not use what i use, miracle grow. I prefer the one that retains watter 35% better forgot the name though.
4. Small pots and some bigger ones. Plastic they are about 65cents each for small, 1.50 for big ones.
5. spray bottle, for sure the best for watering that i've experienced and you can mist your plants to keep pests off since your growing semi-outdoors.
6. You should grow it in like a plastic bin or box to keep from pests/nosy people. but if you wanna do it straight in the shed thats fine too, id ont know what your shed looks like.
7. Whitepaint or mylar or panda paper, all are good for reflecting light.
(for babies you only need to get 1-4 or 1-5)
8. really cheap fan 8$ at home depot, it runs on battery or AC.
all of this will be under 30 dollars depending on how many lights you get. IF you get enough for when the plants are big then probably under 50 dollars.