Minecraft Bedrock Edition: Mod/Addin Creation - How-to articles?

So I know this probably seems like an easy question to answer on my own - but I’ve been having a time finding the info I want (or, probably more accurate - recognizing that I’ve found the info):

I want to teach myself how to create some Minecraft mods and add-ins for the Bedrock edition of Minecraft. Not just because I’d like to learn how to do it - but because I’d like to create some for my 12 y/o daughter (who wants to do her own world on a server) and I’d like to know how to do it myself so I can be a resource for her.

Any suggestions for how-to articles to get me started?

Also - please note that this is for Bedrock edition, not the PC/Java . Thanks!