Some things that I've found to be very helpful in feeling more confident in pvp and boosting my rating from <-100 to 200+ in 2 days were, in my opinion, rather fundamental in being able to have the apm to balance eco, production and attacking in FAF. They were:
-setting up the basic hot building keys for units and structures by hitting F1 in game
-turning on build templates in options (should default to "on") for both structures and units, and then taking the time to setup those basic structure templates (t1 turret surrounded by walls) and unit build queues (t1 tank/arty/scout & t1 air opening) in game for future matches
-learning to have multiple factories to assist a main one so that you can focus on eco, expanding, def/attacking.
-learning that building forward bases (ie. 3-4 factories around a mex) helps establish map control and constant unit production
These concepts should be implemented in some form of basic tutorial/initial client setup.