How to read a board
A logic board is a grid with some cells already decided. Those cells stay. The empty ones are the work.
Read it in groups, not as eighty-one separate squares. A row is a group. A column is a group. The third group depends on the game: a 3×3 box in Sudoku or Killer Sudoku, a region in Star Battle, a line of 0s and 1s in Binary Puzzle. Killer Sudoku also has cages: groups that must add up to a printed total.
Look at what is already there before you write. A group that is almost full tells you the missing fill. A group that is crowded tells you where a digit, a star, or a symbol cannot go.
The same habit works on all four live games. You are not hunting a hidden trick. You are reading what the board already says.
Start on Beginner if the grid still looks noisy. How to play Sudoku, How to play Star Battle, and How to play Binary Puzzle, and How to play Killer Sudoku name the first scans.