Welcome Laura

I read your comment and Gary comment and yes, social media promotion but generally speaking any internet social media working only if you already have a fanbase, in that case you can easily communicate to them everything you get in mind.
Everybody use to type so many common strategies but talking with a general media expert (not only online) he said to me that the real marketing strategy that every business (every) uses is: ads. And you can do it in many ways such as online with Adwords and offline with events, ticket-cards, flyers, spreading the words, painting the streets, and more
Im asking in the forum what is the favourite strategy people use to do but nobody seems to take promotion seriously.