That is one sweet looking guitar. I priced one at the local music store and about fainted.
That's exactly what I have been doing. I learn the first part of the song but give up on the rest. I was thinking the other day and said to myself " I really need to learn the whole song and not the just main riff". So I went back to the song that I have been doing really well with and that is Hells Bells. All this I learned using tabs on UlimateGuitar.com. So you are right about just stopping and not knowing the entire song. The problem I have is how to mix the lead (Angus) with the rhythm (Malcom) and have it sound good. I have to do both I guess.