How do I start investing in cryptocurrencies?

As a newcomer to the world of cryptocurrency investing, I'm curious about the first steps I should take. Could you please guide me through the process of initiating my investment journey in this emerging market? I'm particularly interested in understanding how to choose a reliable exchange platform, the different types of cryptocurrencies available, and the strategies I should consider to manage my portfolio effectively. Additionally, I'm wondering about the potential risks associated with cryptocurrency investments and how I can mitigate them. Your expertise in this field would be greatly appreciated in helping me navigate this exciting yet complex market.