Thanks to both of you for the very thorough info on which APK sites are safer in your experience and minds. Being fairly newish to Android (just 3 years now) I'm learning a lot beyond my decades in UNIX/Linux, Windows, Mac IT world. Also watching the permissions on install is a very good point, I've read them but still need to learn what should be "out of bounds" for a app to need.
I got the older version of Skype installed and it works now.
On another question I'd like to ask the both of you, while I have you here ... or there. One other "bug" in KatKISS 4.4.4 is non functioning GPS for maps, tracking location, etc. I see that TimDuru acknowledges that GPS is a bug and directs to download a file to install, which looks like it's mostly about Audio functions. That seems odd, but anyway, how do I install that file? Same as Gapps from Recovery?
I also noticed that the version of KatKISS 4.4.4 I have on this TF101A is _033 and that there is a newer version _036. Again, how do I install that (install from Recovery again?) and when updating, does it "wipe" the tablet?
Thanks guys, sorry for the Noob questions, I'm learning as fast as I can for an old guy.