I’m really enjoying Christopher Foley’s Collaborative Piano blog at the moment. He has some wonderful tips for collaborative pianists (otherwise known as piano accompanists) on getting work and learning to be a professional. Lots of advice I would love to have had when starting out.
Hugh Sung also has some great practical tips for budding professionals about getting organized, amongst many other interesting posts. I thoroughly recommend these two blogs for a good read. Anything which can help in training musicians to be entrepreneurs!