Need CHESS RATINGS at LOW COST?

CXR, a private chess rating authority, serving customers in several countries, offers low-cost ratings plus tonnes of additional performance data, charts, and dozens of metrics. Not only tournament games may be reported for ratings, but individual "club games" as well.

The Ultralearning Gambit: How I Became a Top 20% Chess Player in Under 50 Hours, by Taggart Bonham

Do you want to learn all the basics of chess and finally increase your rating? Are you looking for a book that can give you practical information to

Chess for Beginners : A complete guide to learn the art of chess and increase your rating, until you become a Grandmaster. (Paperback)

What is considered an average chess rating? - Quora

Elo Rating System - Chess Terms

Elo Rating System - Chess Terms

Chess AI: A Brief History

Chess Ratings - All You Need to Know

Solved A recent study of 50 U.S. chess players details such

How To Learn Chess As An Adult (or, how I went from 300 to 1500 ELO in 9 months) — Alex Crompton