Question about serial and RF connections

I'm trying to get a cheap rf connection between two arduinos.

That looks like the best option right now. In one of the tutorials it mentioned that using this rf connector was like just having a wire serial connection between two arduinos.

To test it and see if i can get a connection going and fully use it. How would i connect two arduinos and have one send commands? how would i wire that? how would i write the coding?

does anyone know of a good tutorial that goes over this?