Well, first - recognize that learning something, and being able to explain it to others quickly and clearly are two separate problems. Both are difficult. Even

Well, first - recognize that learning something, and being able to explain it to others quickly and clearly are two separate problems. Both are difficult. Even for areas that I have a high degree of knowledge in, I find that practicing how I am going to explain it to someone else makes things go much smoother. The only reason I can explain things 'offhand' and have it go well, is if I have done it so many times before that I don't need to practice it.