I found this excellent video today by Emmy Jonassen of Indie Game Girl fame. Its a 53 minute video on how to market your games without a budget.
This video was a presentation Emmy made at Konsoll 2013, and what struck me with the video is how basic many of these things are, yet how few people actually get around to this. Some of the video is more aimed at developers (who are notorious for not getting around to doing the marketing) but its also very valuable for reskinners, because these are still indie games after all.
My suggestion to you is that you allocate an hour to watch this video in full, and take notes.
And then implement this (either now if you have a game already out in the world) or start planning to do this when your game goes live.
These things will actually make a difference in the success of your app so be sure to take the time to do this.
Here is the video.
Let me know what you think. I loved the contents and took a lot away from it.
One big one is that even though I do a lot of app store optimization for clients, I something forget to do the basic things that collectively can be very important to your games overall success.