i think one of beginners biggest mistakes is playing overrolled. they waste so much time.
they're good enough to beat $100NL, but they're not going to playing it until they have a $5k BR (50 buyins). this seems ridiculous to me. players are killing the lower limits but they don't take a shot at the higher stakes. they waste so much time.
i think for players should take a shot at a higher level when they reach 20 buyins. if the lose 4 buyins then move down again and grind it back up. too much time is wasted by being overcautious.
the article on being overrolled should be interesting.

nice article btw.