If you are playing cash games, it is likely that there is no ante. Therefore, in the "Number of ante" section you can choose the "none" option. In tournaments, especially if you are in the later stages of a tournament, it is likely that antes will be present. The ante is an amount of money that is approximately 10% of the current big blind and is taken from all players in all hands (not once per orbit like the big blind for example). All players' antes are added to the small and big blinds to form the starting pot. The bigger the antes, the bigger the range of hands you will have to play, as these will greatly reduce the number of orbits you have left to play in your tournament. In this situation, you don't want to be too patient and get "blitzed" out of the tournament.
Matching cards usually have a 5% higher equity than non-matching hands. For example, one can fold a hand like A2o at times, but open the same matching hand (A2s).
Indicate here whether you are on the small blind (SB) or the button (BTN).
Your number of blinds will have a major impact on whether or not you open a hand. The fewer blinds you have, the more you'll want to open wide. At 100 BBs, a player can afford to make folds that he cannot afford to make at 20 BBs. Some players will tend to pass on these opportunities, but it's better to play a 50%-50% to win a 50 BB pot in a tournament than to wait for aces and win a 3 BB pot because our stack was almost at 0.
Once you have entered the information, you can press "Can I open" to get the suggestion. You'll notice that there is a colour code: grey for marginal opens (opens that will be break even in the long run), blue for Open / Fold hands, yellow for Open / Call 3-bet hands, green for 4-bet bluff hands (Open / 4-bet / fold), and red for aggressively played hands (Open/ 3-bet /4-bet /all-in).
This guide is here to help you, but you can adjust according to your opponents. Poker is a dynamic game where multiple factors will influence the play of your opponents. For example, if you are in a 3-max on the final table of a €100,000 first place tournament, players may be more conservative than if you are playing in a €1 Spin'n'Go. Consider these charters as guidelines and adjust according to the players at the table and the dynamics of the game.
On that note, good luck at the tables!