Step 1: Join the communitie
There are communities that you should join. Check them out here
Step 2: Download the free software
There are several resources that are used for game development. Check them out here. Go to Tools and resources and download the program you want to start with. Then go to Tutorials to start learning. Most of the programs are free, some require a license. Same with the tutorials. With the paid tutorials, you should make an Udemy account and purchase the course. Check out my post about debit cards here.