I always am skeptic about guides like that. I mean, if you really can make $600/day, why bother selling a guide for $9.99...
Ditto ^
Ok I have been out of school for a while, However If your in school you have an untapped market place. You have people who play online games like 'scape and you can benefit from this. See who your mates want buy some gold, buy it for on cheap in large amount or little amounts. Just simply sell for profit, no cash no gp. Do this and re invest your money into memberships from your local walmart, target or what ever. Get a little store open at school if there lot of players, change it around do other memberships maybe hello kitty
It may be slow start of however any money you get is tax free and will keep yourself going, a part time job is great.
At our schools we have a red food system foods like coke etc cant be sold unless on red days (2 or 3 days a month if you are lucky)
However it was not an issue as one kid in grade lower then myself (back a couple years ago) would sell snacks coke etc, he had an open market. Now most people would have brought from the shops up the road however with all that gaming your in a rush to get school, you miss shops you pay the price. He may have only put the price up 20% or so and was not overly noticable but for $100 worth of stock he sold a day he was making $20 profit.
Try to find your own little controlled market, unless your good on the interweb's your not going to make money. You will get scammed and dont buy those guides, simply put if Its to good to be true it is.