[Avodah] Derech HaLimud

[Gilad Field]

 I came across an interesting teshuva in the Chavos Yair (124) that
talks about a proper derech ha-limud. in that teshuva he was
addressing a father asking how to educate his son who
just became bar mitzvah - but it i think the answer is general enough.
my question is - are you aware of sources in rishonim or achronim that
deal with this question?
I am interested in seeing how the question was answered through the
generations in different locations.

thanks,
Gilad Field