Staying with CoinGecko, once you click a certain coin you will see a dashboard full of juicy information nuggets.
You’ll notice on the right, the coins fundamentals like market cap, supply, price and 24 hour volume. These can tell a story in themselves; coins with lower market caps have the potential to grow more, but may be more risky. Coins with high supply, you may have to temper your expectations of growth. Coins with high 24-hour volume relative to their recent days volume may be receiving extra attention recently.
The section on the left can lead you to the next step in your research, first up the official website.