tutorial on path nodes needed!!

[willochill]

can anyone give me a tutorial on path nodes, like just in general, how to create a path for a specific enemy and how to make them go from one node to another? i really dont understand, like ive tried and nothings working, i tried adding path nodes in my map and scripting them in the script but that didn't work. what do i do to create a monster path?
(also btw plz dont give me a tutorial where i have to make a new map and everything, just tell me how to do it in any map.)