re-transplanting?

[WhItE_PoNy]

Yesterday a friend offered me two small seedlings of white widow, it was just kind of a spur of the moment thing so i took them. I really have no idea how to grow pot, but im just gonna give these two a shot and just see what happens. these seedlings are like 2 inches tall and and we allready trandplanted them. but i didnt really do it the way your supposed to, all i did was dig up two little holds and planted them there. would it be allright to let them grow a few more inches and then dig up the plant, and re-plant it in a 3' by 3' hole filled w/ miracle grow? or would digging up the plant twice cause to much stress to the plant and kill it.
I know its probably too late in the growing season to even start growing but im jus gonna give it a shot. its a really good location w/ extremely great soil (since my county supposedly has the best soil in america). the odds are these plants wont be very successfull, but im definately gonna grow some plants next year in the same location, so this is jus some practice.
If there is any advice you could give me please do, because i need all the help i can get.

[rangerdanger]

Avoid miracle grow products.
If I were you, and realizing that there will be very little yield due to the lateness of the growing season, I'd just "work" the soil, instead of spending $ to amend the soil.
That is, dig a hole 2' x 2', turn the soil over and break it up, removing any rocks, etc.
Plant the seedlings, at day 14 start giving veg nutes (1/3 recommended strength at first, each time building up until after about 2--3 add'l weeks to full strength).
Maintain veg nutes until the first week in Sept, then switch to flowering nutes.

[WhItE_PoNy]

Im sorry, but what are veg/flowering nutes? Im really new to this and just sort of came upon it by accident, so i know nothing about this. But, seeing as how i didnt start growing these plants, i really dont know what day they are at. approx. how tall would they be at day 14? Thanks for all of your help and advice, i really do appreciate it.

[grouchy_old_dude]

http://www.mellowgold.com/grow/begin/ free beginners grow guide