Post your questions here about the January 18th Live Learning.
Here are some questions that we didn't get to in the Q and A.
"Is it just 1 file that is created for the whole app that you deploy (ie, xap, apk, etc..)"
well yes each environment will create its own application package for example iPhone will be an ipa, android an apk and wp7 a zap file.
Q2: " What books or videos would you recommend to come up to speed building these types of applications? Also, what hardware and software do you recommend for a good development environment?"
videos of course I would say AppDev does the best :) but phonegap has a number of forums and how to videos, of cource there are lots of references out there. There are a number of books you can search amazon on phonegap and now that adobe bought them I suspect that there will be alot more, here is a link:
http://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias%3Daps&field-keywords=phonegap
As too
As to environments you need to setup a seperate environment to build each platform type. at least in general. xCode on Mac, Eclipse/+Android SDK for Android on whatever platform and then Visual Studio on Windows for WP7 that being the case there is all the build.phonegap.com that takes just the HTML and builds for anderoid and lot of other platforms just not ios and wp7. here are links to those environments and setup:
Android (Phone and Tablets)
Dominating the marketing but in a very fragmented way. Certainly the potential to really be the best platform if the carriers every can get out of the way. http://developer.android.com/index.html
iOS (iPhone/iPad)
The platform that started it all and arguable the best industrial design for mobile platforms... iOS. http://developer.apple.com/devcenter/ios/index.action
Cross platform Native(ish)
more or less a .NET environment like Java for mobile application development accross most platforms. http://www.mono-project.com/Main_Page
A cross platform based system like mono in a custom dev tool. http://www.appcelerator.com/
HTML/HTML5 Based App Frameworks
HTML based application framework for most mobile devices including Android, iOS, Phone7, Blackberry and more. http://phonegap.com/start
HTML based application framework for wp7 only. http://htmlappwp7.codeplex.com/
Windows Phone (Phone7, Mango etc)
Everything you need to know todo Windows Phone development from XNA, VB or C# in Visual Studio for Native applications. http://create.msdn.com/en-US
Q3: "Just to confirm, you can use Visual Studio and phonegap to accomplish the same thing instead of using eclipse?"
Yes you can.