well I love both lead and rythm!
The best thing to improve your lead skill is to learn scales!
The first time I heard of it I didn't knew how they worked, its very importend not to give up (like i did) about 2 months later I really started studieng them (not hard at all) and now i can see how scales work in solo's and even improvise!
and tapping is also a cool thing to try at first its seems soo difficult, now i can play tapping from am I evil, eruption and one...
If there is something just way too difficult i let it wait ,if there's something difficult I just try very hard and later you'll see youve progressed so the way too difficult things get easier and easier!!