Blogs , Wikis, Facebook and more is a handy miniencyclopedia of useful and interesting sites, big and small, popular and obsecure, that make up today's internet community. Each website and online application is explained through step by step screen shots, with details of what each does, why you'd  want to use it and  how you get started. Newly updated and expanded ,  how to improve your network secuirity , lauch your own blog, explore the virtual world of second life , and use tags and bookmarks to navigate news and social networks sites like  a pro.