With your Wallet, you can store seed's, create new addresses, checking balance and send transactions. Within the crypto-world the principle goes like:

• Cold Wallet (Computer without WIFI or Software besides the Wallet) = Your Bank Account
• Hot Wallet (Kastelo & Flipper Zero you can carry around) = Your Purse

Install the wallet from the official Repository, if you're reading this guide, you probably want the GUI Version (Graphical User Interface)

yay -S monero-wallet-gui

After installation you have three options.

1. Wallet without a Node or Miner
2. Wallet with a Node
3. Wallet with a Node and Miner

When you loose your seed, youre doomed and you're money is now gone. Your Seed will be used is used to create adresses, you can view an illustration here.