Mike Ash's Blog

I've been following Mike Ash's (of Rogue Amoeba) Friday Q&A blog postings for quite some time now, but don't think I've actually posted about it before. I have been remiss - if you're interested in becoming a power Objective-C programmer, you should be subscribing to Mike's RSS feed and reading his posts religiously. He gets into the guts of the runtime and covers lot of stuff you should know, but can be difficult to learn from the official documentation.