1. View live sessions of top players
2. Analysis of the base of top players of their own or subsequent upper limit with analysis of distributions
3. Reading and taking notes of educational books in their discipline
4. Search and eliminate faces in your database with analysis of distributions
5. Paid training with a good teacher

Looking too much at the game of top players can in fact be counter productive when you play at micro levels because the game is very different. I like reading books (for the game at the micro levels which i play) and analyzing my own hands that i have marked during play. I also like to watch how high stakes pro players play but i do not try to do the things that they do and i watch them for the fun.