well, first off use mylar instead of tinfoil, it reflects light better. Also you can use fluros for the vegetative stage, just get a warm white, and a cool white bulb. However you should probably buy a good light for the flowering stage. Also, listen to what other people have already said about soil, you will need good stuff to start growing, but that wont set you back too much. Do you have seeds yet, if not go to the link below