I recently started a GREAT online ThinkSpaceEducation class called "Sampled Orchestration." For practice, I loaded the sampled BBC Orchestra (Discover) from SpitfireAudio, then replicated (using Logic Pro) what Guy Michelmore did (using Cubase) in his class called "Sampled Orchestration." For me, it's the best way to learn how to use Logic Pro with a large sampled orchestration. This uses about 26 tracks of instruments (Woodwinds, Brass, Percussion & Strings). I'm looking forward to the next project in the class.