Airdrops are a great way to receive tokens for free at the early stages of projects. To find promising distributions, keep an eye on announcements on the official websites and social media of blockchain projects. Join cryptocurrency communities where news about new airdrops is often published. Use airdrop aggregators that collect up-to-date information. Pay attention to participation conditions: some require subscriptions, retweets, or wallet registration. Assess the potential of projects by studying their roadmaps and development teams. Be cautious and avoid scams by checking information sources. By wisely selecting airdrops, you can build an impressive portfolio of tokens without investments.