Part of the reason beginners pass on blending modes is that they are hard to use if you don't know which one you want. Find an obscure list; scroll down (forever) only to discover you need to pick a different one. There's a much better way to experiment.
Highlight the layer or layers you want to blend.
Press Shift+= (Shift Plus Equal) to scroll through the list.
To move backward, press Shift+ “ (Shift Plus Minus) to return to a passed blending mode.