@MarceloI had joined their foundation program in online mode and as far as my understanding goes, he explains pretty well. He was very good with physical portion, although he covered most f the aspects of economic geography as well. I personally found his classes really good and complimented them with GC Leong Nd ncerts and that s something he himself recommends. Maps u ll have to do on Ur own. However, having said that, I ve never attended any other classes and since i couldn't clear the prelims stage itself, my credibility of appreciating him should also be considered by you.