With a quality racing paper like the Friday WIZARD most of this stuff your looking at is "at a glance" stuff.
Meaning its all there in front of you.
Concentrate on those horses that are in the top 6 WT/TIME ratings and also in the top 6 of any online bookmakers OPENING quote.

As OSULDJ( a top line proffessional punter who used to occasionally post here) once told me "learn to correctly read form and you cant go far wrong."

Cheers.
darky.