yes, well traditionally usb is how to connect to an android device from the host computer. there is one of the 2 usb ports on the pine64 that is the one to use and as i mentioned i think it is the top usb port but check on the wiki i think there is a write-up. it is also possible to connect via wifi but you need to set up the pine64 for that. as far as how to perform adb via any methods you will need to search on the forum and google for the info. i'm over repeating stuff every time someone who apparently can't search shows up and does the thousand questions that have already been answered multiple times. that is not directed at you as an individual, rather a policy of sorts based on about 2 years on this forum. once you get yourself into it if you have difficulties then by all means ask but the info exists ,just need to search. 
and good luck.
and good luck.