CAD is not difficult, and solidwork is not difficult. As long as you don't persist for half a year, you are the engineer mentioned by the boss in Shenzhen. The most difficult ones are the engineers who don't mix well or scare you····
According to what you do, I think CAD is more inclined to graphic design, and solidworks is more inclined to 3D design. Go to the library to borrow the most basic books and practice both of them every day. I suggest you first toss CAD
