Colemak
monkeytype.com
Obvious link but maybe not everyone knows about it. I used Keybr for 2 weeks, but was frustrated by the lack of improvement and the fake words. I now use Monkeytype and it's great. You can type real quotes, and it has Colemak emulation if you haven't installed the layout yet. I can only type 25 WPM so far but I seldom hit the wrong keys and I try to use it at work as much as I can. It's really better than QWERTY so far.
Coming to you from my iPad and my old mechanical keyboard plugged in via a USB-C adapter! Go to Settings -> General -> Keyboard -> Hardware keyboards Finally select the language then scroll down to Colemak! My girlfriend is using the desktop to watch a movie and I wanted to type something up. Never thought I could do it on my iPad but here we are :) Just wanted to let you all know. Not sure how long this has been possible for; pretty sure it's only possible if you've got a physical keyboard connected via USB or Bluetooth.
www.burst-type.pro
Practice typing common words to build muscle memory - I wish I'd had this tool when I was learning.
It seems like there are so many today! Which one is your go-to?
And if you haven't decided to yet, what's stopping you?