Cardano main-net runs as a decentralized network using Proof-of-Stake consensus. You can participate in the decentralization of the network and delegate your ADA coins to a pool. Operators are able to register their pool tickers and you will find them in the Daedalus. You can just select a pool a delegate you ADA coins to it. The pool will have a higher total stake and you will be regularly rewarded every epoch.
I had an older version of Daedalus so I had already created a wallet with a few ADA coins. The procedure is very similar for people who are new and plan to install Daedalus for the first time. In this case, you need to create a wallet and send ADA coins to the wallet.
Download the Daedalus wallet from the official page. Go to Cardano.org website and find the item Daedalus Wallet in the top-right menu. Right after the Shelley hard-fork, there was version 2.0.0. Download the latest version for your operating system and install it.
Right after the installation, the wallet will download blockchain and will by syncing for a while. Let the wallet do it. It should take not more than an hour if you have a standard network connection and a modern computer.
Daedalus recognized a Byron wallet that I have created in the Byron era and offered me to create a new Shelley wallet. I pressed the button Create a new wallet. If you have not installed Daedalus in the past and install a new wallet from scratch on your computer then you will not see the warning. Anyway, you need to create a new wallet so the next step will be similar.
A new wallet name is SHELLEY_WALLET and for security reasons, I provided also the spending password. As always when a new wallet is created, Daedalus showed me a SEED/passphrase that I had to store on a piece of paper. When I confirmed that I will not be able to recover the wallet without 24 words that I have just stored, Daedalus started to sync the transaction history of my old wallet.