if your new to indoors start with soil......you are gonna have a whole lot of other shit to work out to get the atmosphere right let alone worrying about the hydro system....get your room up and running right then you experiment......first thing you need to think about is ventilation....you gotta get fresh air in and stale air out...you want to look into how to carbon scrubbers to filter the stale air through.....you know what fuck it ...check this link out...its jorge cervantes..this dude really knows his shit..
MarijuanaGrowing.com by Jorge Cervantes
start here ..and then start shopping..ebay and craigslist have some great deals..alot of people selling their smaller set-ups when they expand...