Can't comment on the courses that are around today but good luck however it pans out for you.
As niknak says, approach is a bit of a dark art but once you understand what it's all about it's simply a case of applying whatever rule sorts out the situation best.
I don't know whether your new unit has radar or not but I would suggest trying to get in touch with someone at a similar unit (i.e. non-radar or one where approach is a sort of radar/procedural hybrid) and getting a feel for the way things work.