1st yr app'mechanic's queries????

[RVZ05]

Hey there peoples,it's my first year and i wanna learn as much as possible so i've posted a few questions thats on a test of mine.hope u can help,it's very much appreciated.
Q1;How to set Quad cams to do a timing belt??
2001 3Ltr FORD ESCAPE
Q2;How do you test for continuity on a wiring system??
Q3;How do you test if a brake booster works??
Q4;Do u need to "dial in" a race cam when building a 500hp PLUS engine??
Q5;On a multimeter u have 2 plugs,Which plug does the Earth go in??
Q6;Do u need to align timing marks when doing timing belts and chains??

If u could be of any help,it would be very appreciated