Fear no more, Mashable has assembled a list of 12 Essential Social Media Cheat Sheets that covers everything from Facebook timeline to Twitter etiquette.
Here are a couple of my favorites.
Facebook Sizes and Dimensions – this one is seriously awesome for any web developers out there. I know there have been many times when I’ve been asked to create photos for a client and I have to search through multiple sites to get all the info I need on pixel sizes. This cheat sheet sums it all up. And for non developers, this can help you make sure you always have perfectly sized or cropped photos.
Twitter Newbies need to have this one bookmarked. It contains the absolute essential twit-terms for new tweeters. There is nothing more frustrating to a seasoned user than seeing hashtags (#) in a Facebook post. This cheat sheet tells you what it’s used for, which hopefully will make those of you who do that understand why it makes no sense on Facebook – unless you have your two accounts linked (then in which case you can’t help it).
And when confused about what each social network’s purpose is, please view this fun infographic of social media explained in donuts.