Prepping for the marine
A little bit of planning goes a long way. So, let's see what we're aiming for. Although untextured, this should give you a basic idea of the type of character we are going for:
Not bad for what we can do in a single chapter!
We are aiming for a figure about 1.8 meters tall, because that is roughly human height, and it will fit through the doors we've already created.
In-Depth Character Modeling and Animation
If you really want to take a deep dive into character modeling and animation, there are many great resources available, including Packt books. Go to https://www.packtpub.com/ and search "blender character." Remember Blender can output AAA-quality models like the best of them. You are only limited by your imagination and the effort you want to put in.
The marine is in what's called T-pose because he is getting ready for afternoon tea...