Something basic, as it's the third model I've done. I suck at UV Mapping and texturing, so that's left undone. If I can learn how to do UV Mapping and texturing, I may release completed assets eventually.
Attribution Instructions:
A simple 'crappy C4 model by AireLion' will suffice.
Comments
You can try "smart unwrap" it will unwrap automatically and then just texture paint the model.
IMO, building models is the easy part, UVing is slow and tedious. That will vary depending on the model. I've found it worthwhile to get used to unwrapping the same model repeatedly if the unwrap isn't working well.
Usually I'll be half way through the texture before I notice that the UV isn't going to work for some part of the texture, or the texture will be better if I adjust the UV. By redoing the unwrap I learn new tricks to the process and get better at it and have to redo the UV less frequently.
As you are just beginning, approach each model/project as learning experience. The C4 is a simple geometric shape good for learning modeling. My first project was a wooden box, no complex geometry at all, but I spent a couple of days learning the Blender interface and exploring various techniques. There are a number of ways to approach unwrapping, experiment with them.
It is tempting to focus on the end product, a beautiful model well textured. Don't. Instead, pick projects that will let you explore a limited aspect of Blender. Keep your daily goals small and simple to avoid frustration. Be prepared to redo and redo in the interest of learning.
Above all play.