Why would you feel stupid? You have not used adb before, you don't know it, simple. I myself never thought that I would ever understand ADB, and loathed it, when I was a Samsung user.
Now just stay on bootloader mode, open ADB, type in that command, see if you can see your device.
If your ADB is corrupt for whatever reasons, I think you can just download the ElementalX pack, which I think is available on rootjunky.com or some website. Their YouTube video guides helped me a lot.
And if all these fails flash Philz and go the OTG way as others have suggested.
PS: Here's the ElementalX package if you already don't have it, http://www.elementalxdesigns.com/ecl...d-install-TWRP
ADB is only used in recovery, and when booted into android (assuming you enabled usb debugging).
Best not to confuse the two.