Check out the most popular databases Hold’em Manager and Poker Tracker that are widely used among players on regular sites.
You can also find databases and HUDs that are compatible with the popular poker apps like PP Poker, Upoker and Pokerbros.
Determine your win rate with the help of the Earnings Estimator. Check how much profit you’re likely to make given a specific volume. A lot of players overestimate how much they’re likely to win!
You can also use the Estimator to estimate your win rate based on a certain volume and winnings which can be interesting for live players.