Help AI driving me crazy

according to this tutorial: https://docs.unrealengine.com/latest/INT/Engine/AI/BehaviorTrees/QuickStart/11/index.html

I am supposed to used follower_AI_CON_C, however I cannot find that anywhere…is that supposed to be AIcontroller or something else? Please help.

https://docs.unrealengine.com/latest/INT/Engine/AI/BehaviorTrees/QuickStart/6/index.html

Yep, this is AIController which you create in previous step. For creating ai controller in Create blueprint class dialog in all classes type AIController and select one.

okay so I got that part, now for the diagram on the tutorial, how do I find alot of that stuff…I am a beginner…not very familiar with this…is there a beginner AI tutorial?

Ah figured it all out…only node I need is the one that the AI_CON_REF in the greyed out box at the beginning on the left of the blue print image…it connects the Branch node…where can I find that and what is that?

what is this blueprint node in other words…?

65969-what+is+this+symbol.png