Free Software projects are changing the software landscape in impressive ways with dedicated users and innovative management. Each person contributes something to the movement in their own way and to their abilities and knowledge. This personal commitment and the power of collaboration over the internet is what makes Free Software great and what brought the authors of this book together. This book is the answer to "What would you like to have known when you started contributing?" The authors give insights into the many different talents it takes to make a successful software project, coding of course but also design, translation, marketing and other skills. We are here to give you a head start if you are new. And if you have been contributing for a while already, we are here to give you some insight into other areas and projects. Join us for a fun ride through many different projects and areas of contribution. This is a book about community and technology. It is a book that represents a collective effort, much like the technology we build together. And if this is in fact your first encounter with our community, you may find it strange to think of a community as the driving force behind technology. Isn’t technology built by large corporations? Actually, for us it is almost the other way around. The authors in this book are all members of what you could label the software freedom community. A group of people sharing the fundamental experience that software is more empowering, more useful, more flexible, more controllable, more just, more encompassing, more sustainable, more efficient, more secure and ultimately just better when it comes with four fundamental freedoms: to use, study, share and improve the software.