If you like using reddit and want to learn how to Lucid dream, there is a cool subreddit called DreamCentral. I do not own this subreddit but found it when I was looking to alternatives to massive Lucid Dreaming communities. Besides LD4all this is a great alternative to it because the owner is very active. They even linked a link to here under “helpful resources”!
Looks like it’s brand new. No posts yet besides the helpful links.
I’ve just subbed, I think it’s got potential, but in the meantime, r/LucidDreaming is the only active LD sub I think.