Money In, Money Out, and hopefully more of the former. Automated Accounting Systems have made it very simple to accomplish these two processes, with both seamlessly integrating into the General Ledger. Both areas require detailed information when initially setting up your Customer and Vendors. I recommend completing as many fields as you possibly can. This information will be invaluable in analyzing and many common reports you can produce to review your business. In addition, if entry is done timely and properly you can produce your year end 1099's required for filing.