Accounting is also a strange field because its a bunch of almost unrelated fields stuck together. Accounting covers financial accounting (dealing with recording transactions, representing reality, etc), tax, management and cost accounting (things like tracking performance, figuring out what the widget you produced actually costs you, once you've included the direct costs and an estimate of overhead) and a whole slew of other things like internal controls, governance questions (how do you align incentives in an organization?), etc. Picking up a textbook on financial accounting is probably a good starting place to get the basics of debits/credits, but from there it depends what your interests are.

For books on finance, I recommend Niall Ferguson's Ascent of Money as a pretty good introduction into the history of finance and how it all sortof fits together.