Cant answer 1 & 2
3 is not very tight; something like 20lbs ft
Yes - its only about £20; its located on the drivers side; its the canister with 4 pipes on the top and some allen key screws
Its a pain as its located behind the glovebox
Dont skimp on oil; get the Quantum stuff from VW. Think its 5w 40 and is cheaper than Castrol anyway