Feel free to read and improve your skills with FIDE Master ENEASZ from Poland. It is a part of my lectures, which I use to teach my students to understand:1. tactics2. positional game3. endings
IMPROVE YOUR SKILLS (just click)
Also CHEAP TRAINING: 9 USD / 1 hour for 1 student (at least two students in group) (Please write a private message, I try to form appropriate groups;-))