Wikipedia just type Raven (comics). It will tell you all about it. Like when it's made, who made it,etc.
http://images.google.com/images?hl=en&source=hp&q=raven+from+teen+titans&gbv=2&aq=f&oq=&aqi= Or just go to google images and search "raven from teen titans"
It is not that difficult, actually. If you use, say, Google Images, try changing the words you use to search up pictures of Raven and the order they appear in. I always find that it's easier if you start with "Teen Titans" and then add other things, like "Raven at the Titan's Tower" or something. Also, try being less desciptive about the kind of picture you want. Instead of writing "Teen Titans Raven sitting on the couch and eating popcorn" you could just write "Teen Titans Raven couch popcorn". This way, you're more likely to get more general pictures of Raven sitting on a couch and eating popcorn because there's a higher chance someone will use those words in some way then literally titling an image "Teen Titans Raven sitting on the couch and eating popcorn."
It is called every "dog has his day," but it is actually an alien dog the teen titans just think it is beastboy but after they find out it wasn't really him, so there really isn't an episode were beastboy as a dog licks raven.
The show teen titans go can be on cartoon network Or you could watch it on YouTube.
In the comics
you can find it easily on cartoonnetwork.com
You can find them on Wikipedia
The easiest, and most likely, the least expensive way to find and purchase Teen Titans DVDs is to look on Amazon.com.
youtube. you might find it if you google it.
Some you can find at amazon
It's possible to cosplay anything. As for being able to find the cosplay at a store or something that would depend on the store...but it would be easiest to make one...
---- http://en.wikipedia.org/wiki/List_of_Teen_Titans_episodes