For an easy hydro system that you can build for not a lot of dough look into DWC. Just try doing a search and there will be plenty of info. Also if you do decide to grow indoor, you have multiple lighting options. CFLs can be used throughout the veg/flower period, and are relatively inexpensive and good for small operations. If you have the extra cash then you could upgrade to a HID light, Metal halide or High pressure sodium. Always try to get the best light you can afford. Nutes and what not are much easier to make do with but light is the key. Hope this helps