If you build it, they will come........
Seriously, a roll of 5mil poly(black on one side, white on the other aka panda film) $20.2x3's $2 bucks. I'm serious: you could build something for less than $50. Do you really think the world is watching you? I don't.
I see all these guys on here doing ridiculous shit: growing in pc's, using cfl's, etc.. it's like a cheech and chong movie. Don't be one of those guys. Lurk. Read. 3 guys who kinow a ton of shit about growing: heath robinson, al b fuct, and Uncle Ben. Read. Read. Read more. Ask intelligent questions. Punctuate. Mull over the answers.
Most guys who are good are not here. The rare good grower who's actually a good guy and gives a crap: RARE. Opionated morons: everywhere. Trolls abound. It is the internet, after all.
If i were you, i would do something simple. Grow in sunshine mix #4 or pro-mix. No meters. Water. Nutes (a and b, h2o2). super kiss and very effective. move on to hydro later. focus on a goal. make a plan: i want a 4'x4'x7' tent. How do i ventilate? Will i need a cooltube? (yes) Where do i get good seed or cuts? What's my budget? Can i afford to make big mistakes or medium/small ones in my learning curve.
Be realistic but dream. Implement. perfect. read. learn.
Good luck. No one will do this for you. In the end, we all have to carry our own water. Be cautious but be fearless. learn. grow. kill em. let it rip