Understanding Income Statement

1) The use of "Revenue" and Sales
2) Revenue Breakdown
a) As to sources (sales of products, interest income on cash inBank and Investments, sales of assets, commissions, etc)
b) Cash or Accounts receivables
c) Accounts affected by Revenues or sales (finished goods inventory, accounts receivables, cash)

Implicaton of Interest income- an indicator of company's liquidity

3) Marketing and Selling Expenses as a line item before gross profits.
4) Using Gross profit rate on sales as a benchmark consideration