At this time of year, there's no better way to start the day than opening up a new window on your advent calendar and munching on some chocolate goodness. Well, maybe one better way... In the spirit of the season for giving, Treehouse — the online technology school — are giving away a new prize every single day, running up to Christmas Eve. Starting yesterday (the 12th) Treehouse's 12 Days of Holiday Cheer promotion will give you the chance to win a new, bigger and better prize, every day. Winners will be decided by raffle, and to take part all you need to do is like Treehouse on Facebook, follow them on Twitter, Tweet about them or join their mailing list. You'll earn a raffle ticket for each friend you share the promotion with. Whatever you want to learn, Treehouse is a great place to do it. In-depth video tutorials covering all aspects of web design, from basic design principals, to complex server technology are covered and monthly subscriptions start at just $25. However, as an added gift this holiday season, all non-Treehouse members get a month of access for free, so you can kick-start your learning over the holidays. Ever wished you had time to learn code? Maybe you'd like to transfer your HTML skills to building iPhone apps; perhaps your front-end skills could be supplemented with some back-end chops. Don't just take our word for it, here's what some of their customers say:

Since signing up our team on Treehouse, our developers are learning some design principles as well as beefing up on technologies they're less familiar with. — Matt Donovan, UX Designer at Zaarly

Treehouse has a library of lessons that goes far beyond the surface, touching on nearly every aspect of how to design and develop for the web and iOS. — Shay Howe, UI Engineer at Groupon

Treehouse offers tremendous coverage on a wide range of topics and they do a great job of providing education and support to the HTML5 app developer community, something we're both committed to. — Daniel Buchner, Product Manager at Mozilla

So what are you waiting for? Get liking and tweeting to win one of those great prizes and don't forget to take advantage of the one month free offer if you're not already a member. Do you use Treehouse for your online learning? What's your experience of them like? Let us know in the comments.