various ways dear chap, all depends on things such as , board size, profile size  building size, as it can be an off set "T" shape, or contain a grove like in T & G... all depends!!

what other support to the ground are you having!!!!!

what size off joists are you planning inbetween

You can do the corners by making up a "L" shape and fixing this to the posts then just butt the cladding upto this.

If you skin the outside in 12mm ply you can do away with any diagonal bracing to the infill studwork, and just use a few on the oak for decoration.

To hold it down set some stainless studding into the concrete with a nut & plate washer on the end, let this come up through your brickwork, through the wall plates and use another nut & plate washer to tighten it down. You don't want steel pins in the corners, the half lap joints on the wall plate should have a mortice through them with a matching tennon on the end of the posts to pin the joint together and locate the post at the same time. This is the easiest way to do the wall plate corners, the other option is to M&T joint them together with a timber peg and then have a second mortice for the post to locate into.

You may find this of interest

Jason