Develop with Local Testnet
Most devs should use the CLI to run a local development network. It is simpler and more fully featured than just a single node local testnet + faucet. If you want a local stack that works just like a production network (Node API + Transaction Stream + Indexer API + Faucet), this is the option for you.
If you're developing the core Aptos node software itself or have complex testing needs, consider these guides.