HEATKEYS

No file size limits, no ad watermarks - just a free, beautiful and simple online pdf compressor to reduce the size of your PDFs and maintain good quality.

wikiHow is a wiki based collaboration to build the world’s largest, highest quality how to manual. Our multilingual how to manual has free step-by-step instructions on how to do all types of things.

Compress PDF files for publishing on web pages, sharing in social networks or sending by email. Unlike other services this tool doesn

The Adobe Acrobat User Community is a global resource for users of Acrobat and PDF, with free eseminars, tips, tutorials, videos and discussion forums.

Computer tutorials, technology news, software reviews, and personal computing tips.

Home page of the United States Patent and Trademark Office

Cool websites, cool software apps, howto articles and Internet tips.

News, tips, software, reviews, and more for Mac OS X, iPhone, iPad

A site for Apple Macintosh owners with tricks and tips on how to do all sorts of things, hardware, software, advanced and beginners.

Instructables is the Biggest How To and DIY community where people make and share inspiring, entertaining, and useful projects, recipes, and hacks.