CrazyMcCray

Good morning, I am new to GIS and I am trying to come to grips with it since it is required for my future career. While I can see its vast potential my head surely explodes every time I try and complete simple tasks! I was wondering if anyone could point me in the right direction about how I could use modelbuilder to build a simple site catchment model? I know there are tools to perform site catchment analysis but I need to learn how to use modelbuilder. I have been looking on the web but this does not seem to be explored in detail. Any help would be sincerely appreciated - before I do permanent damage to my brain Many thanks.