Both -- there is so much to learn and forget -- practice and note taking is essential. If a book has 30 pages in a chapter, I'll always have about 2 pages of n

Both -- there is so much to learn and forget -- practice and note taking is essential. If a book has 30 pages in a chapter, I'll always have about 2 pages of notes at the end of it. So at the end of a book I usually have a 24 page mini-book/doc that I can refresh my memory quickly. In fact, I read these mini-books all the time when I'm stuck in traffic or waiting on anything.