I don't want to sound like a retarded noob but can someone clarify what those above setting mean exactly

VTT = CPU Termination ? yes ? coz theres is no VTT in the ud3p bios

Then your saying up VTT to 1.3 leaving the other values to change automatic ?
not really clear to me is that what your saying ? sorry

then MCH set to 1,3+ at least which MCH ? core ,reference , or dram ref ?

Skews set 900/900/0/50 what exactly are the Skews ?

Can someone straighten me out so i can try these setting please