15 free guides that really teach you useful stuff

Take look at this post, which includes links for:

1 – Internet Guide for the Movie Addict
2 – Internet Guidebook for An Audiophile
3 – The Incredible Free Manual for Every Mac User
4 – The Underground Guide to the iPhone
5 – Twitter: Best Practices & Tips
6 – The Ultimate Guide to your Windows Mobile Phone
7 – A Computer Geek’s Smart Productivity Guide
8 – Building a Media Center for your Home
9 – The Only Easy Guide To Computer Networks
10 – The Big Book of BitTorrent
11 – A Newbie’s Getting Started Guide to Linux
12 – The Idiot’s Guide To Photoshop
13 – The Big Book of iTunes
14 – The Idiot’s Guide to Building Your Own PC
15 – Laptop Buying Guide for 2009
(BONUS) PSP Up- and Downgrading Guide