Notes on this puzzle
Sudoku #5112 is an easy grid with 39 givens, which leaves 42 cells waiting for a digit. Played purely by logic, it takes 42 forced steps from the first placement to the last.
Nothing beyond hidden single is needed anywhere, so the whole grid is a scanning exercise.
Among the givens, 4 is the most common digit (7 times) and 8 the rarest (0). 1 of the nine digits do not appear among the givens at all; every one of their positions has to be deduced. The emptiest box is the top-middle one, with 3 givens; the top-right box is the most crowded, with 5.
Where to beginLook at row 2, column 2 first: a hidden single is available there from the very start. Scan digit by digit; notes are hardly needed here.