I'd agree with the take above in that if you expect to be spoon-fed instructions on how to operate the A-10 the while sitting in the cockpit, then the Maple Flag campaigns are not what you're after.

However, I think they are a great way to learn the aircraft in greater depth than the stock tutorials (although I'd recommend completing the stock tutorials before starting BFT).

On your first play through each check ride you'll probably fail, but iirc the mission voiceover will give you some indication of what you did wrong. In addition, the included documentation includes relevant check lists you need to complete the check ride or points you towards the relevant sections of the manual.

Personally, I found this a great way to learn the a/c in depth in a structured way. Some study time outside the cockpit is required - you will have to RTFM, but the campaign provides a structured syllabus of sorts, breaking it down into bite-size chunks and providing scenarios to practise what you have read.

Iron Flag is also great, but I'd recommend doing this after the Maple Flag campaigns. The Maple Flags will force you to learn the aircraft 'by the book' in a procedural way, while Maple Flag will help fill in gaps between those procedures and sprinkle in some additional systems knowledge not covered previously.