• mocha and @project-serum/anchor must be globally installed via npm i -g mocha @project-serum/anchor. Local installation doesn't work.
• Run a local Solana node using solana-test-validator. Kill the validator and reuse the terminal for anchor commands.

1. Create project using anchor init t1_basics
2. Build project and generate IDL using anchor build
3. Deploy using anchor deploy
4. Add new program to workspace using anchor new program_name

A test script is automatically created in tests folder.

• Run all tests using anchor test
• Run specific test using anchor test tests/t2_accounts.js

Data is stored on Solana in two ways:

1. Accounts:

   • They hold persistent arbitary data, similar to files in Linux.
   • Also contain metadata, which controls write access.
   • Accounts need to pay a rent otherwise they are purged. Paying tokens above an amount makes the account rent exempt.
   • Design pattern: Store user data on accounts. Try to keep programs stateless.