"A sat, or satoshi, is the smallest unit of Bitcoin, representing one hundred millionth of a whole bitcoin. On this site, I aim to demonstrate how I've acquired Bitcoin for free. There are faucets that provide small amounts of sats, games that offer Bitcoin as rewards, apps that allow you to earn sats on purchases, and educational apps that reward you with sats for learning about Bitcoin."
The Lightning Network is a layer built upon the Bitcoin blockchain. It is used to send very small transactions very quickly from person to person. This also means that companies can send small amounts of bitcoin as rewards, which you can collect in a Lightning wallet. These "sats" can then be sent to a cold wallet that you control the keys to.
So, to get started, I recommend downloading ZBD Wallet to your phone and visiting this faucet to receive your first sats. And remember, when you're building your stack... every sat counts!