dude i messed up a few times myself. my first time our i germinated about 200 seeds hat were given to me by various peeps.
I planted then in 2X2 pots for a few weeks and they eventually died. either by not enough light or by forgetting to water them of by streatching and falling over. but I kept with it and grew an indinca 4' and got about 1 oz from her. that was my 5th grow.
now I am on my 6th grow, armed with an underground army ready to answer my call for help and I believe i will get 200 or more grams per girl this time around with my 2 girls.
any temp under 65 and the plant will stop growing.
Read this it will help you tremendously.
Closet Cannabis Growing Guide
will show you everything from seed starting to curing of the weed and everything in between.