There are many requirements that you must meet before you may get started. You will have to pay for a developer liscence from Apple Inc. See the link below. A year of iOS developer is about $99 USD. Also, you must have a macintosh computer with at least leapord or up. As for the resources and ways to learn, they are provided by apple after you sign up. Also, there is a devloper forum where you can seek help from other developers. Twice that year, you can seek debug help etc from a certified developer. I am building a social network for developers of all sorts. If you would like more help, or have more questions, become a member of the network here: http://www.mstoffelproductions.com/register.php
If needing to contact me, you can reach me at the email address on the contact page www.mstoffelproductions.com/contact.php or send me a message on my profille. www.mstoffelproductions.com/profile.php?id=1
I am the best help that you will probably find, seeing as I am a developer myself.