One of the most important concepts you can learn is Object Oriented programming. Once OOP is mastered, learning any object style language becomes much simpler. Common OOP languages used on the web: Java, C#, as well as scripting languages such as JavaScript, and ActionScript.
Check out this wikipedia article for a general overview of OOP and many links out to OOP theory, and even a few links about what’s BAD about OOP.
About jg
I'm an interactive creative developer and application architect, with over 18 years of web/interactive development experience, and have been developing with interactive tools since the early 90's (and programming for over 23 – I’ve been coding since I was 8)
I'm equally at home working on "back end" projects such as database optimization, data modeling, and warehousing/reporting as I am working on "front end" GUI programming for the web, desktop (.NET or Java), or mobile. I'm particularly interested in SOA, mobile technology, architecture, art, and design.
