A lot of great advice here! As somebody knew to this art form (musician turned games designer), the best trick I've learnt is to get involved in the community of it all. From diving into forums like Scirra and TouchArcade, to the plethora of hashttags on twitter (#indiedev and #screenshotsaturday are my favourites for striking up a conversation). Go to networking events/conferences/exhibitions, even better if you can display at any of these, a lot of the time these are free too