First have you gone through the make seam part? CTRL+W. Mark seam. That is the first part and will make it easier. But as far as a tutorial even the older tutorials are still relevant since the basics have not changed alot. http://www.blendernation.com/2013/10/24/learn-how-to-use-uv-unwrapping-in-blender/   try this one and see if it helps, if not there are more around that people here will be happy to help with. sadly I am still the sites hold out that refuses to grow up from 2.49b.