I got your back,
First place to start is definitely here:
http://wololo.net/2015/04/08/big-fa...ering-content-3-50-pool-exploits-which-ecfws/
And
http://hackinformer.com/PlayStationGuide/
Also the Vita tutorial written by Mech is good as well
https://gbatemp.net/threads/quick-g...to-hack-and-installing-emulators-ecfw.381378/
This will give you a general grasp on all thing vita hacks. As of now the latest FW is exploitable but not recommended.
Try to get a vita in either the 3.18 to 3.36 range. This will allow you to use both ecfw and bubbles.
I should mention there is no native vita hack atm but 3.18 does have a web kit exploit. Nothing happened yet, but if native vita hack does arise it probably be on that FW
The most popular vita mods(ecfw) are TN-V and ARK which take advantage of the psp emu to play iso, homebrew, plugins etc
If you have any questions just ask, there's a lot to cover haha