Some may comment on his accent, but the fact remains that you can't find a tutorial of this nature on RU-vid. Most of us are here because we couldn't understand from our own lecturers with the so called good accents!
actually it was really easy for me to understand even though English is not my motherlanguage. Please do not give orders to people or give advices nicely. His pronunciation is perfect. Everyones motherlanguage is different so not everyone can or have to speak in American or English accent.
