where can i get line locks at and ae they easy to install for someone without that much wrenching experience???

Try a tow truck supply company. Tow trucks use them because line locks can act as parking brakes on all wheels. Very useful when winching/vehicle recovery.
Installing a line lock is easy, but requires you to disconnect and re route a brake line. You need to know about either flaring brake lines or installing new ones and bleeding brakes. As brakes are really important, let a pro do it if you are not sure.