Primer reading for new Rogue Cronus owner?

I just bought a used Cronus (not Magnum), and rather than bombarding you with a million scattered questions, could you steer me to some good, basic info related to regular use, maintenance, problem solving, "tube rolling," etc.? I am new to tubes. I read the 9-page manual, but please tell me where to look next - links appreciated. Thanks in advanc, and happy listening!