Long story short...study MET, You're going to need it!
GRIB is good for low level as is already for upper level.
The little diagram thingy on the GAF leaves a lot of info out. Is the cloud mass stationary? is it moving, expanding or reducing? I take it that dash line bumps and tits still represent troughs hot and cold fronts? Other than that, cloud, vis and fzl are simple as to understand...just need a little more info to prognosticate....and why the hell is this info put last?