What do you want to know?
A few important points to start:
With only one button, you need to wait for the computer to cycle to the screen you want to deal with. If you get impatient and push a button at the wrong time, you will just be waiting until it finishes doing whatever you told it to do and then meanders back to where you wanted to be. It is never in a hurry.
Nitrox is a bit of a pain. The nitrox setting needs to be reset before each dive. To select a nitrox value, you need to release the button at the value before the one you want. That is, to set 32%, you release the button when the screen says 31.
Never plan a subsequent dive after a 12 hour surface interval. The Data + does a reset after exactly 12 hours and it does not care if you are in the middle of a back roll or trying to follow your buddy who has just stepped off the platform. Nothing you can do about it other than to plan to avoid it.
The cumulative O2 algorithm is a bit more conservative than newer Oceanic computers so don't be surprised if you see some difference. The differences are fairly small and easily managed.
It is a great computer. I now have 3 of them. My wife got the VEO200 because she wanted 2 bells and a whistle. (And I was getting tired of always having to do her nitrox settings on her Data +.)
