Yahoo! … my first request 🙂
First, here’s a chromatic exercise that I still use as part of my own warmup: https://www.realguitarsuccess.com/topic/chromatic-exercise-part-1-speed-developer-3/
It’s not a true chromatic scale because there are a few duplicate notes.
If you find this difficult you’ll see earlier in the course there’s a version #1 in the version #2.
Second… I’d be happy to create a lesson on the chromatic scale. I’ll have one ready in a day or so.