do I need all the update files or does the latest update have all the information from the previous updates included?
Sometimes there are intermittent updates to the software itself, so the errata is an important thing to download and print out and keep handy. If you do as I did, start at page 1 and go cover to cover, you will certainly come across points that need special attention or explanation - I find that these forums will be your best friend as you work through the lessons. Most everything you need will be in place and I made it through with very few times needing to come here and ask a question and find out that some update was needed, because of the software being upgraded in the interim. Congratulations, You are embarking upon a very satisfying and rewarding adventure...
PS: before you begin, I would recommend that you establish some method of taking notes for yourself as you proceed, this way you will have, as I have now, a condensed version of the book hitting the high notes with points and reminders of how to tackle each subject, in your own words and notes. This has been the greatest help to me and remains at the ready whenever I need refresher on any subject in the book.
Logic Pro X 10.2.2 / 15" MacBook Pro Retina, OSX 10.11.4, i7processor, 8GB ram, Focusrite Scarlett 2i2 interface, AKG C1000S Studio Condenser Mic