CS5 CS from Mac Book Pro -MS Suface Pro 4; Wiindows10 as 2nd install;
don't want the entire CS to go onto the MS Surface; just for now:
Is there major challenges? Or is there a straight forward tutorial page I can use to guide the process?
Well, licensing for the old Creative Suite products was not cross-platform, so you couldn't have an installation on both Windows and Mac computers.
The newer Creative Cloud products eliminated this restriction, so you can install a single CC purchase on both Windows and Mac.
If you wanted to move the software between two computers of the same O/S flavor, then this post could help: