What you need to learn is basic drafting skills.
I am going to suggest distancing yourself from the software and focus on drafting as a unique skillset. Once you get confident in drafting abilities then come back to the software and learn to use the tools there.
I would guess your BEST bet to learn drafting is your local community college. What you are looking for is Mechanical Drawing, and Geometric Dimensioning & Tolerancing, also Blueprint Reading would help to if you are unfamiliar.
Stuff i can use: AutoCAD 2010, AutoCAD Inventor 2010, Solidworks 2009, MasterCAM X2/X4, CNC's FADAL, and Hurco 3-axis CNC Mill