How do I get online trading?

Hello there, I'm curious about how one goes about getting started with online trading. I understand that it involves buying and selling assets, like stocks or cryptocurrencies, through an online platform. But I'm not sure where to begin. Can you provide some guidance on the steps I need to take to get started with online trading? What kind of research should I do? Are there any risks I should be aware of? I'm excited about the potential of online trading, but I want to make sure I'm doing it safely and responsibly. Thank you for your help!