I just got a MacBook Pro. Its amazing how little I know about it..
I've had my MacBook Pro Touch for 9 months and I still know little about it, lol!
Surprised me when I put a bottlecap in front of the keyboard near the trackpad and it stuck. There are magnets left and right that secure the lid when closed. But they're convenient for holding magnetic objects while you're using the Mac.
I bought a Charjenpro USB-C hub for $80 for connecting accessories, is compact and works great with USB3 and micro-sd cards, and a USB to HDMI 4K cable for secondary display on large screens, highly recommend these for movie watching while working on main screen. One negative is that I often accidentally hit the Siri key when trying to delete or mute, and these tips here will help me mute the Siri audio when not wanted.
I just got one too! Enjoying it, but had to install Windows on it so I could have my Quickbooks.