#空投操作全指南

I need to analyze the user's question. The user mentioned 'full guide', which means covering all steps from understanding airdrops to actual operations, including preparations, finding airdrop projects, methods of participation, claiming tokens, safety precautions, etc. At the same time, it may be necessary to explain the different types of airdrops, such as community airdrops, testnet airdrops, invitation airdrops, etc., and the participation methods for each type.

Next, I need to consider whether I need to search for the latest information. Due to the timeliness of airdrop projects, many projects may only be valid for a specific period, and fraudulent projects are constantly changing. Therefore, it is necessary to confirm which reliable airdrop channels are currently available and the latest safety tips. Additionally, airdrop operations may vary across different blockchain platforms (such as Ethereum, Solana, Polygon).