Social media marketing

Depends on what route you wanna take. If its paid traffic then use FB and Google. However, you will need to watch out for your acquisition cost and return on adspend(ROAS). I don't know what product you are selling but ensure you plan well especially using funnels.

This age bracket has money compared to 20s thus ensure whatever you sell them you present it well. Use surveys and/or quizzes to generate leads or straight lead capture pages then close them unless its an online sale.