Mesh stl-surface
 

Dear all,

I am a bit confused about the *.stl-meshing at the moment. I read some threads here about this, but there are still some questions left.
When I do "Build Topology" and the curves and points appear on my surface, do I have to erase them later on again? Or are they a sign for a "bad geometry"?
I realized that my surface includes several small surfaces afterwards (due to the curves that appear). Do I have to merge them again or does this not have any influence on the quality of my mesh?
I couldn't find the mentioned tutorials for meshing *.stls. Can anybody maybe post a link please?
Thanks a million for any help!
Lilly