I know people say read loads before you buy anything, and it's probably good advice. It's not what i did though. But i've never been one to hang back once i've made up my mind. And i've made mistakes on the way
If you know you are serious about wanting to grow your own bud, then it's worth at least making sure you know exactly what you are going to need to provide for the plant. If you just want to try a really cheap option to start, then fluros/envirolites, some soil, a decent grow/bloom fert and seeds is all you really need. Plus of course somewhere safe to do it.
I'd allways suggest a hps though, as i'm not keen on fluros for anything but veg. I just went out and bought a 400watt hps when i started and stuck it in my wardrobe, above 4 nl/haze plants i'd grown to 1 foot before i swtiched to 12/12. Needless to say they were growing way too big for my wardrobe and the heat was just silly and a couple hermied. So i then had to fork out for a budbox, and inline fan.
So there's a lesson in itself. You need to assess where you will be growing, and how easy it will be for you to control the enviroment within it, aswell as choosing a strain suitable for the conditions. Like i said, i'd say if you are serious about growing and aren't going to give up after a failed attempt, buy a decent light and a budbox if you don't have a space to grow in large enough to take the heat from a HID light. Decent nutes aren't expensive really. £12 for a litre of
biobizz grow and
biobizz bloom,and you can get away with just using that. Soil is cheap as chips at a garden centre. Even the grow lights aren't that expensive. A 250 or 400 is quite reasonable. And if you don't need to buy a budbox, it won't cost you alot really.
Goodluck, i hope you get it all going.