I am professional guitarists and I want to advertise my guitar resource centre (which I spent years making)

I don't want to come across spammy, but can anyone advise where I can share a YouTube link?

I feel its very beneficial to guitarists, and its a free service.

Kind regards
so, no as I understand it you can't advertise its explicitly against the rules, but you can write an article and link it to a lesson, just not an ad