KiCAD is an open source program to create schematics and PCB layout and it is easy to use, even you can create your own libraries and also it comes with a 3D viewer.

I found a tutorial on the web and I would like to share that with you,  cleck here to see the Mini tutorial – KiCad (pdf)

Tutorial de KiCAD (en ingles) haciendo click en el link de arriba.