The brush engine in Krita is not the same as Photoshop and the way the various settings work is not 100% compatible. There are ways to import brush tips from Photoshop and you could try to reverse engineer the brushes to recreate in Krita. However, if you are new to krita, I would recommend you get familiar with the standard brushes and the brush engine first. There are also great brushes available in the resources sections of this site. There are free bundles that are excellent, and also some paid ones. The Rakurri and Deevad brushes come highly recommended and fulfil most of my brush needs.
But to answer your question, here are some resources that might help you in conversting PS brushes to Krita:
