Is there a possibility to make the “auto-hinting” before exporting the font; like “Auto-Hint these glyphs now”? Now I do it manually…
and another question: Will the “auto-hinting” (while exporting) also hint the stems that ar still not hinted in a glyph (f.e. I hint all vertical stems in o, not the horizontal… will glyphs make the rest?)
You can trigger the autohinter from the context menu, if you really need to see the hints beforehand.
But I would not recommend that. Better set the font-wide hints, as discussed in the handbook and the tutorial, export with the autohinting on, and look at the rendering result in Adobe InDesign (best with the Adobe Fonts folder), then manually hint only the glyphs that are not rendered as expected.
I also use hints to read stem values all the time, it is just faster. I need those hints anyway. Using guidelines or a measurements tool seems like a waste of time to me.
Thom built us something to see those hints in all masters