Twitter. My technique was to look up the developers of all my favorite apps on Twitter, follow them... and then whenever they RT someone saying something interesting, follow that person too. In a very short time you'll have a comprehensive feed of interesting developers talking shop.
Might as well add a few names: @danielpunkass, @nicklockwood, @vadimshpakovski, @Padraig, @soffes, @corydmc, and all the CocoaPods people: @alloy, @orta, @hanke, @micheletitolo, @kylefuller
I always see these kinds of posts, and since I've been doing iOS dev for awhile, I wanted to gather as many iOS dev resources in one place as I could. So I've created this site for that:
While we're here, I don't suppose someone who knows the scene could recommend an article or post that demos how to hook up a basic ios7 app to a general API (likely REST)?