Glad that install went pretty well.

I don't know about KWallet. Perhaps on of the Linux forums can help.

Re Education. I don't know what's in it or if it's of use but you might try (Yast/Software/SoftwareManagement) installing kdeedu3 and seeing what that gives. Also try a couple of searches in the package manager for appropriate key words.

Re printers. I use the CUPS management to view print queues, set some things up, etc.. Try http://localhost:631/