I am trying to pull together all my files that have been spread across several PC of many years.
Fortunately the hard disks were willing to let me gather files.

So now I have a dilema of knowing what to do with my files.
(1) Where do I put them?
Seems like it really does not matter.
They can all reside under the BB folder and BB will locate.
Is this OK?


(2) Where can I find a definition of all the file extensions?
e.g. .mp3 - is a common format music file.
but what about
.mgu
.mgx

and all the other?
Is ther a webpage that list and explains all of them.

I would like to categorize them: temporary, must have, etc. so I can better organize my files.

(3) I also see that some filenames are related by different extension types. Do these need to be kept together?