Please recomment some Solaris/Unix/Linux self-paced video training

It happened quicklier than I expected, the CIO said “We have a system running on Solaris, learn Unix”. So here I am.

First of all, where do I start?
I got some advice on Linux, what about Solaris?
From what I read Solaris is a Unix flavor. So I assume I should learn Unix and then get into the Solaris unique features. Or maybe I should go for Linux training since it’s also a Unix flavor?

What training path would you prupose?

Also please recommend a good video self-paced training (I am big on CBT, learned a lot through that).

Thanks