Below is a pair of links to “cheat sheets” or as like like to call them, “help sheets”. These sheets offer useful information regarding a ton of web tech, such as keyboard short cuts and code tags.
The top link is for an HTML5 cheat sheet which shows you new tags and tells you ones that are not in use any more. The second link is to a whole host of different help sheets, ranging from Photoshop keyboard short cuts to CSS3 tags.
These help sheets are pretty useful if you’re new to this stuff. Although I will say that I think these should be used as a resource as and when you need it rather then a constant help. If you are reading from a sheet all the time its unlikely you will improve, so use in moderation.
I hope these help you and let me know in the comment section if you have found any worth sharing.