Step one: Finish school.
Step two: Get a job.
Step three: Get an apartment.
Step four (may be started now): Read and research.
Step five: Set up your spot.
Step six: THEN buy your seeds.

20 and still hiding from your parents? *sigh... If you're enough of an adult to grow weed and do it right, you are enough of an adult to have a conversation with all members of your household. You get busted, your parents could lose their house. End of story, end of discussion, end of thread. Get some freaking respect.