It is, I guess, possible to skip the short stories and jump straight into Blood of Elves, as some of the stuff from the short stories made it into the games, but I would advise against that. The games are set after the books and Blood of Elves takes for granted that you know things from the stories that did not get included into the games.
It's basically less about getting to know Geralt, and more about getting to know other important characters. The two most important ones they left out of the games. So far. Looking at the trailers for Witcher 3 they're going to be back with a vengeance.
The games kind of complicate things. It looks safe to just jump into the main series of books after the games, but they are actually considered alternate continuities and while it may seem like a chore to read the short stories after playing the games, because, meh, you kind of know the setting already.. well, personally, I enjoyed the short stories in their own right, soooo.. I think the're worth the read.
This post has been edited by Puck: 27 January 2015 - 07:04 PM