Tonics
 

I don't know if the answer to this question is obvious or not, but here goes.

Where on earth do you buy tonics? I can't find them anywhere, nor can I find anything telling me where to find them :S

Gypsies tend to sell them. Check out Cuba, there will be one selling some by the jail.

What he said!
 

yeah, tortuga has a gypsie too, with that wagon thing there outside the town, but thats where ya get em. their cheap too, good deal!

When you visit the gypsies to buy tonic, make sure you look to the left of the menu window. There will be tabs, one being the tonic tab. When beta 2 first started, I didn't notice the tabs and had a hard time trying to figure out how to buy tonic from the gypsies >_<