There are quite a few timber framing books around by guys who are framers but don't have any structural training, if you're looking for aesthetic details & you want to analyze their joints yourself. If your architect has designed the truss & you have to size the members and detail the joints, it's pretty straightforward. Too many guys rely on too much steel in the connections; they look far better and can be done completely in wood if you have competent framers. If you want to reduce costs, you can do concealed steel connections. there are proprietary systems, or you can look at connections in the Canadian Wood Council's Wood Design Manual.