It should come with Simulink. Type Simulink in the command window and it should launch. The library will open. Click File > New > Model to create a new Simulink Model. You can find various blocks in the library browser. How many you have will depend on the toolboxes you have available. Most likely you won't have to many tool boxes available. I don't quite have a good grasp of Simulink myself. None of my classes require it to be used but I've been trying to figure it out but it hasn't been going well. I'm taking a class on control systems next semester which is suppose to be heavy in Simulink. Have you been trying to make an m-file for your current assignment? What you can try to do is use a source and connect the source to a transfer function. The sources are under Simulink > Source. Transfer function is under Simulink > Continuous . Once you have the transfer function block, double click on it to open the properties. Fill the in the coefficients. Like [1 1 1] = s^2 + s + 1 . To the output of the transfer function, connect the scope. You will see what happens when you take a function and apply the transfer function to it. The simulation runs for a default for 10 seconds I believe. You can change this though. After the simulation has run, double click on the scope. A graph will be displayed. If you want you can hook up a bus(Simulink > Commonly Used Block > Bus Creator) and show plots on 1 graph. Like you can connect the source and the output of the transfer function to the bus. The connect the output of the bus to the scope. This will show both the source and the output of the transfer function.