Airdrop mechanisms are very varied since they depend on the creators' intentions.
The overall approach is often quite similar:
- Sign up on the project's page
- Complete the required actions to benefit from the airdrop (exchange cryptocurrencies, follow a content creator, share a post, write a post, interact on the relevant platform, etc...)
- Obtain your tokens
Then it remains to decide what to do with the obtained tokens.
Keep them or sell them? This of course depends on their value and their potential utility and worth in the future. To estimate this, gather information and stay alert for updates.