Hello, I am trying to figure out how to travel from London to Bruges, Belguim. It looks as though I will take the Eurostar to Brussells Midi then take a local train to Bruges. If this is correct, I cannot find the site to book a local train out of Midi. Also, does Eurostar offer some sort of discount since I will have traveled on their train? I think I read about this somewhere. Going in September.
Yes, you take the Eurostar to Brussels Midi and transfer to a local domestic train to Bruges. These domestic trains are not bookable in advance (which is why you can't find out how to do it). There are two trains an hour on this route, and no reservations are possible. The "discount" ticket you are referring to is an ABS ( All Belgian Stations) add-on to your Eurostar ticket. This will cover your Brussels to Bruges travel on any train. More details from the Man In Seat 61, here (under "Going to Bruges?"): http://tinyurl.com/bteyj58.
It's just under 1 hour from Brussles to Bruges.