This is where I'll document the things I have learned. :-)

28/03/2021 00:00 a.m.: I still have no idea if "Азъ вражьдовѭсъ ѥ" is correct...
➥ 17:44 p.m.: I learned when to use ѣ, and when to use ꙗ. ^_^ ѣ is written
only after a consonant, while ꙗ is used in all other positions.
(Why ꙗ looks like that on the site, I have no idea.)

29/03/2021 23:49 p.m.: I haven't actually learned anything...
I spent my day playing Calico... ^_^ ;;

16/04/2021 21:31 p.m.: Haven't had motivation to continue learning.
My birthday was exactly a week ago! I'm ████ years old now.