In 2025, crypto has evolved into a $3.46 trillion global force, driving innovation across finance, gaming, AI, and real-world infrastructure. This article explains key concepts like blockchain, major crypto types (coins, tokens, stablecoins), wallets, and real-world use cases like DeFi, GameFi, and DePIN. Perfect for beginners and investors alike, it also covers investment tips, wallet security, and trading on platforms like Gate.io. Ready to explore the future of finance? Start here.