There's no sample files per se with the manual, but the Training Guides at this link do have sample files available:
https://www.blackmagicdesign.com/produc ... e/trainingThe major tutorial vendors (Ripple Training, MixingLight, FXPHD) all have online courses and do provide various files with their training. Note all of them are authorized Blackmagic trainers, so they follow a well-structured plan that's perfect for beginners.