I usually don't have problems with unwrapping. Unless I have a very complex mesh, I can handle it by making seams, using different unwrapping methods, and if needed edit the UV mapping by hand. But I didn't think Blender needed linked faces in the UV mapping in order to bake correctly a map.
Speaking about tutorials, I learned a lot of UV mapping, lightmap baking, etc reading Andy's tutorials
, which are a great resource when you want to improve the visual quality of your Age. But it doesn't mention shortcuts as ctrl-a and ctrl-p.
Well, now I need to figure out how to avoid sharp shadows. Tach managed it in Relativity, so it should be possible. Maybe it will make this aliasing issue less noticeable.