I guess most 3D Cad/Cam programmes are a big learning curve. However using a fully integrated Cad, Cam and postprocessor really simplifies many of the stages. I am all Mach3 and F360 does this job admirably. Couple up to the support videos,forums and zero purchase price. It became a no brainer to me.
If you begin simply and resist the temptation to get ahead of yourself you will be fine. Cut some primitive shapes, then modify them. Perhaps engrave a little text etc. Jumping prematurely into "useful" work will probably burst a few blood vessels.
Take it slowly you will get there and still have some hair left.
You can always ask on here too!!