Every listed company publishes results each quarter and a full annual report. Three statements tell most of the story. You can see all three on any company page on GroWiser.
Profit & Loss
How much the company sold (sales or revenue), what it spent, and what was left (net profit). Look at the trend over several years rather than one quarter.
Balance sheet
What the company owns (assets) and owes (liabilities, including borrowings) on one date. The difference belongs to shareholders (equity).
Cash flow
The cash that actually came in and went out. A company can report profit while its cash shrinks, so cash from operations is worth checking.
Margins
Operating margin (operating profit ÷ sales) shows how much of each rupee of sales is left after running costs. Stable or rising margins over time are usually a sign of a steady business.