Advanced tricks for fiendish puzzle

[nikesad]

Is there any way we can find the tricks for number grid. Easy grids I am able to solve but the advanced tricks I don't know so the fiendish puzzle stump me? Would love the advanced tricks like we have in logic puzzles. Or can someone guid me to a youtube video for advanced tricks. When searching for numgrids tricks, it is not showing the required results, maybe the puzzle is called something else.

[flyingturkey]

Seems like it's also called picross/nonograms.