The Target
Based on your foundation, your target is your customer. Define your customer and decide how your target gets information. The bigger your target base, the more diverse your marketing. Which is, of course, also limited by your time and budget.
Who is your target? Or rather, who is the decision maker to purchase your product/service? Many businesses live on referrals – if so you need to motivate current customers to refer their friends. Almost all businesses live and die by reviews – decide how to get them and get permission to use them.
If your target has android cell phones or iphones, then social media will work for you. If your target is young, or of the older generation (before cell phones) then you will have a different kind of marketing mix.
If your target has computers and email, then you can utilize electronic marketing if you collect their data and permission.