I have a few Window users at my church and today I asked them about starting to do Apps. and video type things for use around and through the church. One teen wrote me back and said he did know the code for Apple whereby he does work with code in Windows. Because this all Greek to me, can I ask, is there some sort of book that I can buy so he can do these things on a Mac??:)

Fred, I think it might help if we knew what sort of "apps" you were envisioning. Web-based? (ie: things that church members would do via the church's website)

What sorts of things are you hoping to accomplish or do?

Web based is the way to go now for apps that community groups like this can use.
So really you don't need to find anything, if they just build web apps,, people just need a modern web browser. Java apps, Javascript, CSS, PHP, HTML 4 or 5, database scripts etc work as is, on both Windows and Mac.

Mines & Paddy, what I have is 6 teens who know more about computers than this old brain will ever get use to. What we hope to achieve, is make interactive programs/apps to be used within the church and then as well videos that could be shown on the church website. I have used Keynote & iMovie for a while but have trouble turning a Windows machine on. I would like to introduce these folks to the Mac and am looking for an used Intel machine that is within my budget. In the meantime I'll let them play and do as they will as long as the results are usable. We have a Dell machine at the church that has sufficent memory and programs to get started. As I asked at the first if there was a "Code" book that would help the 2 boy genius that i have well, I would purchase it.
Thanks to you both for your replies

Chapters has 1,000s of web app book as does the library. if you want to go the web based route, you can go and start looking at those. You may even find free open source projects already existing that can be tweaked for your use. Also understand, there are dozens of computer programming and scripting languages. You need to figure out what you want and what the available resources/skills you have are. I'm hesitant to give an answer because I'm not really clear about what you want. But it sounds like you should be looking at just starting a simple HTML web page, then adding the components as you are able to create them.
Many ehMac members including myself can answer specific questions in the areas we have knowledge of, but you need to make your own detailed plan first.
Have fun!