There is no recycle bin a la Windows. When you remove something from your phone, it's GONE. To remove an app, find it in your app drawer, long-press it like you're going to put it on your home screen and then drag to the top. At the top you'll either see app info or remove, or both. You could choose remove right there, or you could go to app info. In app info, you can clear the data from the app (which should go when it's removed anyway) then uninstall the app. There should be no need to do any further cleanup at that point.