🚀 Objective:

• Write your first Solidity smart contract from scratch.
• Learn the fundamentals of Solidity — Ethereum’s smart contract programming language.
• Deploy your contract to the Sepolia testnet.
• Learn about best practices and security when writing smart contracts.
• Use OpenZeppelin for standard, secure, and reusable contract components.

🧠 What is Solidity?

Solidity is a contract-oriented programming language designed to write smart contracts that run on the Ethereum Virtual Machine (EVM).

Smart contracts are self-executing agreements where the terms are written into the code and executed when conditions are met.

🔑 Key Features of Solidity:

• Turing-complete: Solidity is a full-featured language capable of expressing any logic that can be computed.
• EVM-compatible: Solidity code runs on Ethereum and any other EVM-compatible chain (e.g., Binance Smart Chain, Avalanche).
• Static Typing: Solidity is statically typed, meaning variable types must be defined ahead of time.
• Inheritance: You can inherit other contracts, which allows for code reuse and modularity.
• Security: Smart contracts must be written with security best practices in mind (e.g., reentrancy, overflows).

🔎 Solidity’s Core Components:

1. State Variables: Hold the data of a contract, stored permanently on the blockchain.
2. Functions: Execute specific logic. Functions can modify state variables, interact with other contracts, or return values.
3. Modifiers: Reusable pieces of logic to modify functions (e.g., permissions).