Free Experience:
For this code you must be a Sensate. In the private sensorium activate the green stone where you talk to ravel (Make sure you've already talked to her once) then activate it again and answer in the following order: 1,1,1,2,1,1,1,1,2,1 for 6000 exp repeat as necassary.

Free Money:
First, talk to the woman at the bar who isn't a dustman. Then tallk to her again giving the answers 1,1,1,2,3. She gives you 50 coppers and you can repeat it over and over again.

Experience It:
In the market with Karina, talk to Karina. Then talk to the Harmonium Officer. He is looking at Karina. Tell him to go to her. Then talk to Karina and she'll give you some exp. Keep doing thi and she'll give you more.

Thanks to Revolution readers Sk8Dude6, Conoral and Jimmy Mahnken!