First of all you can use internet paid & free advertising through social networks and other advertising sites. Send emails.
Can buy S-Builder, PSA-to-go
New offer from tripleclicks "bid & build" where you can get 2PSA/day by 50 bids/PSA
Maintain min. EA rank for free CSA and BTL/STL/GTL/PTL for more CSA shares based on different ranks.
Use printed media from "Marketing Aids". Read " Marketing Methods" to know how to do it.