These instructions are for the Version 1.5 board with an acrylic case (both “Standard” and “Pro”.) If you aren’t sure what board you have, take a look at this page: What Kind of Kit Do I Have?
NoticeI’m no longer publishing an HTML version of the assembly instructions. It was difficult keeping up with three versions of instructions (downloadable PDF, printed manual, and HTML version.) Instead there will be one PDF version that you can download below. This is the same PDF that will be sent to the printer for the spiral bound hard copies.
Your Arduino will arrive pre-programmed, but you may have to upload the software at some point. You can do that by following the instructions on this page.
You also would have received a Micro SD card with disk images. If you’d like to download the contents of that card again, you can download this archive.