To be able to delegate or transfer tokens on cspr.live, you need to install the CasperLabs Signer extension for the Google Chrome browser. The extension can to be install from here (if you read from Google Chrome browser). Click on "Add to Chrome".
Click on create account.
Select an Algorithm using the dropdown menu. Select ED25519 unless you have no other reason to do so.
Very important, click on "Download Active Key". Download and save your keys, especially the private one [name_account]_secret_key.pem, on several different devices (very low probability that the devices break at the same time). Keep copies of the keys in a safe place. [name_account]_secret_key.pem allows you to restore your wallet
Do this before sending funds to your wallet
Click the hamburger icon and select the Download Active Key option. Then click on the key icon to see your address.
You can copy your address (the public key) by clicking on the icon next to it.
Delegation operations cost 2.5 cspr, while undelegation operations cost 0.5 cspr. Remember to leave some cspr for the undelegation operations. The rewards will be placed directly into staking