'Tokyo Beer Drinker' blog

より大きな地図で Tokyo Beer Drinker Map を表示

Not much to this post but to promote his blog: 'Tokyo Beer Drinker'.  He's listed far more places to get craft beer than I knew existed, and I agree with his take on the ones I have been to.  I haven't met him, and know nothing more about him than is on his blog.  I have never seen more information in one place on the topic in English.  Start there.