Mobile Web and Hybird Development

HTML and CSS
http://www.wowebook.com/book/html-and-css/

Eloquent JavaScript 2nd Edition
http://eloquentjavascript.net/2nd_edition/preview/

Secrets of the the JavaScript Ninja
http://www.wowebook.com/book/secrets-of-the-javascript-ninja/

ECMAScript 6
https://www.sencha.com/blog/toward-modern-web-apps-with-ecmascript-6/

Mastering AngularJS
http://www.wowebook.com/book/mastering-web-application-development-angularjs/

Pro JQuery 2.0, 2nd Edition
http://www.wowebook.com/book/pro-jquery-2-0-2nd-edition/

Node.js in Action
http://www.amazon.com/Node-js-Action-Mike-Cantelon/dp/1617290572/ref=sr_1_1?ie=UTF8&qid=1390311344&sr=8-1&keywords=node.js

Mongoose Application Development
http://www.wowebook.com/book/mongoose-application-development/

JavaScript Testing with Jasmine
http://www.wowebook.com/book/javascript-testing-with-jasmine/

Android Development:

Building Android Apps with Java and JavaScript
http://www.wowebook.com/book/building-hybrid-android-apps-with-java-and-javascript/

PhoneGap 3 Beginners Guide
http://www.amazon.com/PhoneGap-Beginners-Guide-2nd-Edition/dp/1782160981/ref=sr_1_2?ie=UTF8&qid=1390312120&sr=8-2&keywords=phonegap

Windows 8.1 Development:

Windows 8.1 Apps with HTML5 and JavaScript Unleashed
http://www.amazon.com/Windows-Apps-HTML5-JavaScript-Unleashed/dp/0672337118/ref=sr_1_1?s=books&ie=UTF8&qid=1390313138&sr=1-1&keywords=windows+8.1+development+javascript