Welcome to the course. To get started right away you can download the circuit design tool Logisim from the resource link. You will need to have java running on your machine as well so click the java link to download this. The third link will give you access to 3 files, we only need one at the moment the CPU_DESIGN_SMALL_RAM file. If you open this file in Logisim then you will see the Welcome screen. Just click on the CPU_MEM_1 block to start simulating your first circuit. Or just start building your own copy in Logisim along with the videos. Note the other 2 files called Assembler and Multiplysim will be used at the end of the video series. I have also added 9 simulation files that I used to build up the control section if you want to re-create these simulations (the links are in the resources of the control section videos. Have Fun!