<p>Microsoft has finally released its new service pack for Windows, and this expanded and updated MagBook from the team at PC Pro contains over 170 pages of expert advice, tips and tutorials to help you master Windows 7 SP1. You&#39;ll also get great advice on keeping your PC secure for free, trouble-shooting tips to ensure you can keep your PC running smoothly, as well as insider tips and tricks to getting more mileage from your laptop battery! If you&#39;re a PC user, this MagBook is a must-have reference.