Systems/sim --Tips/pointers on the Boeing 727

[Mach trim]

Will be going on the B-727 course soon.
Any systems/sim info,tips or pointers on this aircraft would be appreciated.

Making the transtion onto a heavier aircraft
Coming off the Lear-35 onto the 727.

Where could I get info?
Any good websites out there ?

Thanks in advance,gents from Canada

Cheers