This last month I have decided to take it upon myself to finally dedicate myself to the game of go and have been doing daily tsumego, playing games, and doing self reviews with AI and great progress has already been made.
I figured a good next step would also be to study professional games indepth, not because it may be the most efficient way to get better, because I know it probably is not (especially at my current level). However it is something I know I enjoy, sitting at my go board and studying gives me equal amounts of pleasure as playing the actual game. I have looked at the available pro game commentaries in English, but I am not finding too much. The best of modern (I am not looking to study Shusaku) go seems to be either Relentless which isn't published anymore or the three volumes of Lee Sedol game commentaries.
However what I am really looking for is something akin to Relentless for Lee Changho, does this exist? It seems quite odd to me that there are a multitude of books on Lee Sedol yet a player that stood on top of the go world for almost 15 years has barely anything available in the English language. Perhaps I am not looking in the right places? So far I have only found his tsumego and tesuji books which appear to have been ghostwritten and a french book (which I unfortunately cannot read).