One thing that some people hate and other people love, is that Samsung doesn't build wireless charging into the back of their phones. Instead they sell a separate back cover that you can buy that will give you wireless charging. Sure it's not the best way to do things, but it's certainly better than not having the option at all, like with the HTC One or the LG G2. Samsung now has the Wireless Charging cover for the Galaxy S5 available on Amazon for $30. It is shipping in 3-6 weeks though, so it's not quite available just yet. They are selling it in both black and white, so if you have the gold or blue Galaxy S5, you're a bit out of luck, at this point.
The wireless charging cover is just a cover for the back of your phone, that's literally all it is. Its still water resistant and dust resistant. But you will have to buy the wireless charger separate, and those can get expensive quick. One of my personal favorites is the Tylt Vu wireless charger. But there are others available on Amazon that are cheaper, some of them around $30-40. Which is still a bit more than a standard charger, but wireless charging is just so great, especially when you have a water resistant phone like the Samsung Galaxy S5 which has the flap for the charging port. For those interested you can order your wireless charging cover from Amazon using the link below. It's $29.99 right now and in both black and white.