I second Lynda.com. Larry Jordan walks you through the training & makes it simple to understand, as well as brings some light humor into it. For $25/month you get that plus everything else related to Apple, graphics, web, video, & yes, even Microsoft. I frequently pop back over to Lynda to jog my memory about something. They break the training into 10 minute segments so it’s easy to look something up & play a video of just the one topic. When you done with the training, cancel the subscription. Simple as that.
I did spring for the yearly membership because I wanted the media files for the tutorials. The media is helpful but not necessary. If you know how to edit, skip the media files & go for the monthly membership. If you training newbies than you may want the files.
-dMR