transitioning from 2D to 3D cad

I am an old school gal who learned to draft using AutoCad, moved to Ashlar Vellum on a Mac and am now trying to transition to Solidworks. I took the Essential Training course in my area, but can't seem to wrap my mind around how to do my own projects with Solidworks. My brain wants to draw an orthographic - can anyone direct me to a resource or guide to making the mental switch from 2D to 3D?

SolidworksGeneral