It will take years for the full ramifications of the Brexit to unfold. In the meantime, here are the five most important things you need to know about this historic decision. 1. The stock market is reeling, but no one yet knows what the ultimate impact will be. 2. The British pound is getting hammered, which is good for vacationers but could have a longer-term effect on trade. 3. Banks and ratings agencies are lowering their ...