1. Install an official wallet from Cardano.org
Choice of Daedalus or Yoroi
For this example, we will delegate with Yoroi.
2. Install Yoroi from your app store
3. Click on the Delegation (Simple) tab
4. Search for a Stake Pool you would like to delegate to.
5. Click Delegate
6. Enter in your spending password
7. Click DELEGATE button
8. 🎉 Congratulations. Rewards will start showing up in 2 days, or epochs. Check your rewards on the Dashboard tab.
To learn more about your pool and their performance, use these amazing community created tools.
Cardano PoolTool - The most comprehensive staking statistics for Cardano on the web
ADApools.org - Independent cardano staking pool toplist
AdaStat - Statistics for pool operators and ada holders