Yes, the terminology can be a bear, many, many years ago when I started using Logic the manuals were written completely by the programmers, while they were quite humorous in places the were also really hard to understand so I learned/realized.. you can't really do anything so wrong it's going to destroy your computer so why not go ahead and experiment. I learned the basics of Logic without a manual, months later when I went back to find some some details I could figure out the manual made a lot more sense.
Logic has been somewhat Appleized but it's not really an Apple program, it was purchased almost as developed as it is now... a lot of the additions a fluff to make it easier to understand for new users while at the same time there are some real improvements.
This is personal opinion: With all of the forums/online tutorials...etc...etc. It seems users are learning (but not understanding) the same things, plus everyone wants to use it right away so nobody takes a deep breath and investigates on their own. Logic is a deep, deep program, while learning don't be afraid to go off on a tangent and explore the program without any other input, it can actually be inspirational. One other thing good about the manual or "Online Help", in looking up a function you will invariably come across a related concept that will provide further insight.
And..... have fun.