All good questions EatingMF, never worry to ask here, it's why this forum is "Better!" we like to help and teach and learn (I learn all the time!).

I can't add much to what they've posted and the links are good, maybe only that SR-101 is a very good steel that is edge friendly, not difficult to make sharp and it lasts!

Out of the big 3 here (INFI, SR-101 and SR-77), I have noticed and read you need to take a little more care of SR-101, don't leave it in the rain or a damp place to long. It does clean easily enough and should last you a lifetime...