With this tool one can create 3D objects and not only for 3D printing. It comes as software, app and webware (works on Chrome, Explorer needs upgrading). Its easy to use, has many tutorial videos and brings 3D modeling to wide audience, not necessarily the techies.
http://www.123dapp.com/howto/catchVarious tutorials fro each step available. NOTE: ENGLISH Language only
Thingiverse is a place for you to share your digital designs with the world. We believe that just as computing shifted away from the mainframe into the personal computer that you use today, digital fabrication will share the same path. In fact, it is already happening: laser cutters, cnc machines, 3D printers, and even automated paper cutters are all getting cheaper by the day. These machines are useful for a huge variety of things, but you need to supply them with a digital design in order to get anything useful out of them. We're hoping that together we can create a community of people who create and share designs freely, so that all can benefit from them.