First of all, welcome back! :)
As a suggestion, you could:
- go through your Coretechs and see (again) your Archive and Resource Hub;
- check the "Quick Start" from both the Tau Station Player's Guide and Tau Station Wiki, and always keep returning as needed;
- it could be very interesting to check the Guide's Timeline for an overview of all the changes, and that you can see with further detail in the Tau Station Blog (notice that every post has its own tag, so it might be easy to filter what you want to see first. In this case it could be the "changelog".
I hope it helps.