Just a suggestion....
Most computer manuals are very poorly designed and have way more information than you need. There are computer features that are obvious, which is most of what appears on the face of most computers while you are diving. Then there are other things you will need to look up because they are easy to forget, some of which are setting nitrox, following directions for unintended decompression, using the logbook, planning, etc. On my first computer, those items were so carefully scattered throughout the manual without being properly referenced in the table of contents that it must have been intentional, and if you read through the entire manual, you can easily miss them as your mind becomes numbed with that overloaded of stuff you don't really need to know.
There really aren't that many such things, and you can easily make a short cheat sheet for them. You could even laminate it and store it with your computer.
Years ago I was assigned to do a swimming pool refresher course for someone with well over 100 dives. She was about to take her annual dve vacation. She had all her own gear, and it was high end. It included a hose-connected AI computer. As she turned on her air, she noted that her computer had read the contents of the tank and determined it was EANx 32. When I told her that her tank had air, and the computer was just reading the nitrox setting she had put in previously, she refused to believe it. She insisted her air integrated computer always analyzed the contents of her tank. I told her the dive shop did not have the ability to make nitrox, and she finally believed me.
So it is very good to review these things, and a cheat sheet makes it easier.