Do/have something worth promoting. Break down why its interesting for people to learn about it. Make a list of people who have the ability to reach many other

Do/have something worth promoting. Break down why its interesting for people to learn about it. Make a list of people who have the ability to reach many others at once. Write an email that shows them why what you are doing is interesting. Include a good summary of your "thing" as separate document they can use as a base template. Email those whose address you find. Buy some targeted ads on linked in or facebook for those you cannot. Rinse and repeat.