How do I buy a presale crypto?

Could you please elaborate on the steps involved in purchasing a presale cryptocurrency? As a prospective investor, I'm curious about the entire process. Where should I start my research? Are there any specific platforms or marketplaces that facilitate presale crypto purchases? Additionally, what are some of the risks I should be aware of, such as the credibility of the project and the potential for scams? Also, could you provide any tips on how to determine the potential value of a presale crypto and its chances of success in the future? I'd appreciate any insights or recommendations you could offer on navigating this aspect of cryptocurrency investment.