Newbie - explain times?

Those are two different types. Live games have time controls like 10 minutes (meaning 10 minutes for each player, and your clock only counts down when it's your move). If a clock reaches zero, the game is ended as a loss for that player. 15/10 is initial time in minues / bonus time per move in second. So 15 minutes on each clock at the start, and after a player moves, that player gains 15 seconds. (So if you move faster than 15 seconds on every move, you would end the game with more time than you began.)

There's also a type of game that mimics the old style of correspondence chess where moves were made through the mail with postcards. It's called daily chess or turn-based chess on this site. In this type of game there is NOT a total time like 10 minutes per player for the whole game. The time is for each move. So 1 day to move would mean you have 24 hours to make your move, and after your opponent replies, you have another 24 hours to make your next move, etc.

Err, I said "another" but it's not cumulative. At the beginning of your turn you would always start with exactly 24 hours.

Additionally, that 15/10 you mentioned means each player has 1y5 minutes on the clock and they gain 10 seconds after each move they make.

Oops, that got answered already. I should learn to read first. :/

Haha

The more you play, the more you realize chess is a specific skill like a musical instrument, a ball sport, speaking a language, building furniture, painting a picture etc... The point being that practice and experience makes you better, general intelligence doesn't really matter.

Not that it feels good to lose, but maybe it helps to remember all good players have lost many thousands of games

There is:

https://support.chess.com/customer/en/portal/articles/1444850-how-do-the-time-controls-work-in-the-live-chess-

Ending the sentence in "..." implies "there is" already.