After taking this trial lesson, I gain a tons of knowledge which is really useful for all DSErs. Besides that, it is easy to be catch up and understand the use of different languages and pattern. Although it is a free course and I take it just one month before my DSE, it is not late to try on those skills.
The video is excellent! The teacher uses very high-quality writing samples to explain the writing skills for argumentative essay and speech. He actually reveals plenty of skills in this short free trial video, which is a blessing for me to grab the chance to watch it. Thanks to him and I will certainly recommend the video to others.