Centralized exchanges (CEX) such as Binance and OKX offer user-friendly interfaces, stable matching systems, and high liquidity, making them suitable for beginners. Decentralized exchanges (DEX) like Uniswap and PancakeSwap do not require account registration, allowing users to manage their own assets, which is safer but has a less friendly interface and larger slippage. CEXs are more susceptible to regulatory policies, while DEXs are suitable for users with higher privacy needs. It is recommended that beginners start with centralized exchanges to familiarize themselves, and once comfortable, they can try using DEXs to enhance asset security and independence.