Normally when devices connect to the network they are assigned IP address by the router which does so sequentially (in the order of devices being connected) or randomly. The same goes with your Raspberry Pi. But if you wish to use your Pi without a display (for e.g. via SSH, as a Web Server, or any remote project) then letting the router assign a IP address is generally not a good idea. In such cases you should give your Pi a static IP so that it is always accessible on the same address. That is what we are going to do in this Instructables.