If your goal is to work as a 3d artist in the game industry:
- It’s a good idea to learn Max or Maya, or both. If you have a working student email you can get a student version of both packages for free. Max and Maya also have the most content in terms of tutorials, support, plugins, etc, because they are widely used industry standard programs.
- Learn Substance Painter and Substance Designer. They are both very much in demand, and are very commonly used in the industry.
- You can get Photoshop for $10 a month from Adobe, it’s worth it at that price.
- Practice things from start to finish. Model, unwrap, texture, import into UE4, and make it into a scene.