well umm
its not the accepted anime&manga drawing techniques. i can't recommend it to newbies because it will not increase their technique. i won't recommend to the middle class because it will lower their drawing style. and i'm drawing manga&anime for 1 year and this tutorial didn't give me any idea.
but if you ask my opinion. author must read some drawing books not tutorials because tutorials sometimes may not be useful. drawing books is the best way to learn drawing techniques since there is no course for drawing anime manga characters books are the best way.
i recommend the tadashi ozawas books since they are excellent. and if you want to see my drawing style pm me and i will show my works.