You're going to find the coaching materials on this site a bit tricky if you don't know how to play chess or how to read chess moves. After that, you can find things suitable for different levels of player, about chess openings and about the middlegame (both tactics and attacking and strategy) and about endings , about chess history and culture , about chess psychology, and about improving . There is also a lot about junior chess and the business of practical chess playing , and a bit about chess books. There is also a guide to levels, ratings and grades. Everything else is either of local interest or possibly of interest to no-one.
If you're not sure where to start, try and decide what class of player you are, what you want to work on, whether openings and about the middlegame (both tactics and attacking and strategy) and about endings, and then consult the index of materials for different levels of player by topic to find something that might be relevant.
If you're still not sure, I have some more direct advice aimed at the junior chess squad, whom I have worked alongside through triumph and disaster for many years. The advice, which has hardly changed in all this time, may be summarised as:
- don't play Old Stodge
- be familiar with all the basic tactics and
- get into good habits of thinking
- including working out what to do if you're not sure what to do (planning)
- and know and practise simple mates and basic endings