Thanks so much! You're more than welcome to use this model for any project you like as I have included a cc0 license with the model. Be sure to share the project with me when you have a demo ready because I would love to play your game. As for tutorials: YouTube is your friend! Try searching "Blender low poly 3D modelling" and you should find an endless amount of tutorials for free. As for texturing: you're gonna want to look into using Gimp and modifying textures to be 256x256 pixels with a splash of cubic interpolation when you scale down those pexels images. Hope this helps!