Yoroi is a browser extension to google chrome, firefox, edge and iOS. There will be mobile versions too. It is light wallet. Therefore, you will not need to download the entire blockchain. Just install the extensions.

Step by step guide

1. Download your corresponding extension form https://yoroi-wallet.com/#/about.
2. Install it.
3. Open your wallet with your seed words or make a new wallet. If you make a new one write down your seed words carefully. Do not save them on your computer.
4. Go to the staking section an choose Pool CASCH or by ID feaf6e416cd79649df5a7575b240b5740d7735a80a8f688e8b73bf06

(we will add pictures shortly)