I'll start by admitting outright that I am n00bish Linux user and brand new to Manjaro. Please be gentle.
After installing many, many distros on this Black Macbook 4,1
over the last three days I am very very happy with Manjaro (manjaro-xfce-18.1.0-stable-x86_64). All of the other distros I tried had issues with the video card, extremely slow booting with lots of errors, no fans, wonky trackpad, regular app freezes, or some combination of those. Manjaro works beautifully, with one serious caveat; I cannot get the wifi working. It works with some other distros, with proprietary drivers (ubuntu for instance), but in Manjaro wifi isn't listed, only wired, despite the card showing up in the hardware preferences. I'm not sure where to go from here... I believe it's broadcom? I do have ethernet working.
I'm not brand new to Linux, but most of the things I know how to do in terminal are from google searches with code supplied. I'm still learning my way around Manjaro. I can follow directions though! Any extra charitable souls out there that would walk me through getting it working? I don't know: a) what driver to use b) where to get it c) how to install it.