I think it's important to figure out what you want to use the Wolfram Language for. As a reference, I have about a year of experience with it, using Mathematica to do theoretical Solid Mechanics calculations with their phenomenal symbolic toolbox.

Here are two notebooks a friend of mine put together covering a few basic concepts that may help you:

https://drive.google.com/drive/folders/1YGM-xswFTjfwZ5MhFqpL...