Limit ring games (also called limit or fixed limit cash games) are the ideal point of entry for a new poker player. As a beginner, you can learn the basic principles of poker strategy without taking big risks.
Limit means that in each round the size of the bets is fixed. Ring or cash game means that players can take a free seat or leave at any given time, taking their winnings with them. When you take a seat, you decide the amount of money from your total bankroll to use for that table. This amount is your stack.