I have a Goal - I want to write ipad apps

Ok - I thought I should just put this out there and see where it takes me.

I would like to write educational apps for young children.

I would like those apps to fit my teaching style and philosophy - so I figure, I should probably just write them. I have some programming skills. They are fairly old school programming skills, but I believe my skills are upgradable.

Where do I go to learn to write apps? Any advice welcome.