Rigol has published lots and lots of new app notes and videos to describe in detail the use of their products. 77 articles on scopes alone! 58 on spectrum analyzers, 39 on waveform generators. Quite a gold mine!
https://rigol.desk.com/ features lots of helpful app notes & articles.
Lots of short training videos are: https://www.youtube.com/user/RigolTech/videos
Rigol also refers to other Channels which exhibit Rigol stuff: https://www.youtube.com/user/RigolTech/channels
And they have a new logo:
"Beyond Measure" has gone away and now it's "Innovation or Nothing".