Sorry I didn't see this thread sooner!

I'm not sure your experience level, but assuming you're starting from scratch, i'd say hit youtube up for some blender tutorials, and take it from there. There's a vast ocean of tutorial content on youtube, raging from beginner stuff to first person animation specific guides. I'd suggest learning unreal, but that could be my personal bias speaking - unity or godot are viable engines as well. The nice thing these days is that the content creation pipelines are pretty generalized so switching from one engine to another isnt going to require you to learn a bunch of extra tools (beyond learning how to work with the engine tools, at least)