I've often heard people wanting to know where they can learn about various web technologies (html / css / javascript / jquery) and recently came across a package of classes that (look like they) usually go for $145 but are free for the next 6 days. I haven't used them myself, so I can't speak with authority about the effectiveness, but figured that I should share in case this is something that you might be interested in.
https://stacksocial.com/sales/the-5-hour-developer-freebie-bundle
There are 5 courses in the "Learn ___ in 1 Hour" series that cover HTML, CSS, JavaScript, jQuery, and HTML5. I've used all except HTML5 in iForms (HTML5 is not generally supported in HEO) so if you'd like to learn these technologies, go nuts.
Also, if you take these courses, I'd like to hear whether they are user-friendly, useful, easy to follow, etc. so that someone else that's on the fence can make a better-informed decision.
Happy learning!