Try searching this one on google. It will be a great tutorial for you. nettus html It covers the basics of using HTML 5. Hope it helps. Goodluck.
w3schools is one of the best places to learn. Here's an html5 cheat sheet. http://www.smashingmagazine.com/2009/07/06/html-5-cheat-sheet-pdf/
Well there is only one truly reliable place for the html, be it any version of the html, and that is w3 school, go there and you will find all types of things that you may need.
Do you already know HTML, and want to learn the latest features of HTML5? If yes, try HTML5 and You, a series of video tutorials that explain all the new features coming with HTML5. If you don't know any HTML at all, you have to start from scratch. One of my personal favorites is 30 Days to Learn HTML & CSS. Brilliant step-by-step screencasts to guide you from the basics to your first webpage!