New keynesian DSGE model

Hello, Professor Johannes,

I am very new to the setup of the DSGE model as a student in finance. But I need to set up this basic model, before we try to make adjustments and implementing our extensions.

I have solved the Euler equation, but my issues start when starting to code. I saw your Gali 2015 implementation, which is the one I am using. However I do not understand why other basic models list consumption and other variables, while you do not. Is it because it is already included in the production function?

I just feel I dont get the var and exo setup yet in dynare

In the basic Gali model, Y_t=C_t holds. For that reason, Gali seems to have decided to fully substitute Y_t out.