Welcome to Emacs!
- I write about Emacs things fairly frequently: https://xenodium.com
- I started making Emacs videos recently: https://www.youtube.com/xenodium
- For aggregated Emacs blogs, check out https://planet.emacslife.com
- For aggregated Emacs videos, https://emacs.tv
- The Emacs subreddit can be handy too https://www.reddit.com/r/emacs
- If on the fediverse, follow the #emacs hashtag
- Sacha Chua's Emacs News are great https://sachachua.com/blog/category/emacs-news
With respect to "modern", maybe these two posts could be of interest:
- Visual tweaks: https://xenodium.com/my-emacs-eye-candy
- macOS tricks: https://xenodium.com/awesome-emacs-on-macos
Enjoy the ride!
Sort of side question, but why do you set the command key to be Emacs' meta key? I've sort of waffled on that myself -- the plus to doing it is that it matches Windows (which I am in too much of the time) and Linux, but the minus is that it not only breaks 20+ years of muscle memory I have with MacOS, it collides with a few other global hotkeys. (Recent collisions I've noticed are Alfred's clipboard manager, which defaults to Shift-Command-\ (M-|, shell-command-on-region), and the system-level screenshot hotkey on Shift-Command-5 (M-%, query-replace).