Introduce the operating mechanisms, advantages, and risks of DeFi (Decentralized Finance) services, such as flexible lending rates but potential vulnerabilities in smart contracts. Explain the characteristics, application scenarios, and market status of NFTs (Non-Fungible Tokens), including the surge in digital art collection. Additionally, highlight cryptocurrency information resources, such as professional news platforms, market analysis tools, and the value of engagement in popular communities, to empower investors comprehensively.