Highly recommended GMAT course for non-native speakers

I would recommend the sentence correction (SC) course for non-native English speakers because it provide concise and clear concepts of GMAT English grammar. E-gmat have its own teaching style that I really like it so much. E-gmat created a rule for every concept that makes it very easy for me, as a non-native speaker, to understand, memorize, and apply those concepts in real situation. Practice questions after the end of each chapter also play an important role in helping me to fully understand and know how to apply the concept when I encounter with each type of problems. Last but not least, almost all of e-gmat contents are interactive contents that are not boring as I have ever experienced with the traditional way of study that is solely reading from a book. In conclusion, even though I had studied for the GMAT for a while before I purchased the course from e-gmat, I think this course is still very valuable for me because of the above mentioned reasons.