Great guide! Simple short advices, I love them.
Although I have a problem with math related statements. I'm not sure that it's most efficient way to farm gorgor contract, I even think that it's not even 2nd most efficient way, but it's quick! And second thing is about using Soul Shards, grey the are Most efficient when it comes to getting Knowledge and Gold.
And one factual mistake - daily quest at 23 isn't extra, it will take place of your first daily quest(factory or holy groves one)
(by DaKickZzz)