I have my OP1 coming and I’ve been reading that the first thing you should do is charge it… can I play a little first? Will it harm it? Or should I really just charge it?
Do I have to turn it off while charging all the time or can I charge and play?
When my op-1 arrived I just plugged the USB to charge and played with it while reading the manual. I think you shouldn’t think too much about it.
Yes, you can charge and play at the same time it’s not a problem.
I turned it on first to check if everything was working correctly. Checked the battery level (which was almost full) and turned it off half an hour later…
…ten minutes after that I picked it up again 
I charged it after I was done with it 