Its simple as in:
1. By a used Vita most come out with a 3.60 firmware or under for a cost of 80€ or approx 90$ with a 1 year guarantee then smile and go home.
2. Go over the internet download from your ps vita henkaku and install, install trophax and vitashell.
3. Download the game interested and install it over your ps vita with a usb cable and ready to go.
4. Do the trophies as you wish once you finish come up here and share with your buddies
5. From the buy to the first trophy i did it in approx 40 minutes.
Folders goes from 15$ to 50$ dollars around the web so probably NO ONE will give you them FREE. Also if your planning to use them on a legit account youll get banned in no time since many will sync the folder, so do it yourself alone OR.....
Unless you're rich and wanna spend money ask the folder you like anyone can prepare it for you, legit look, pay and sync easy. Off course no 3.65+ cause the flow did not manage to go past yet.