Lynda.com has videos about Objective-C and also iOS
If you check on youtube, there are a couple of people who are pretty good at giving the basics of Obj-C.
for my part, I went over all course of codecademy.com (helped me to get my mind on "How it works with variable, loops, etc etc) and I recently found that on code.org, under the Objective-C and iOS courses, the first chapter is free. its pretty fun, give it a try!
I started with the books of Kevin J McNeish who wrote 3 books about iOS development for NON-programmer. The second one is about Obj-C and It’s where I started to learn the language. (it has exercices + files to download + videos and interactive slides on the iBooks version + regular updates following the evolution of iOS and Xcode + code is in color matching Xcode, you’ll never get lost)
Hope it helps, let me know