the best thing for you to do, is to start learning UV mapping while your models are still simple. a lot of the students at uni come in with sculpting and intermediate modeling skills, but never learned UVing because they poly paint all their work in zbrush ect. when they come to realize they need full uv’s for the projects at uni, they get overwhelmed by the complexity of the model and don’t know where to even start, and chaos ensues. For simple models its as easy as selecting a face and pressing a button to uv map it, stitching uv’d face shells together is also one button and will teach you the best places to put seams. i haven’t used blender in like 5 years (i use maya) but from what i can tell it uses a seam based uv system, where you select the edges you want to be seams and it does the rest like Unfold 3D/rizomUV.