How do I get Siacoin?

I'm curious about acquiring Siacoin, could you please explain the process to me? Are there any specific exchanges or platforms that I should use? Are there any fees associated with purchasing Siacoin, and if so, how do they compare to other cryptocurrencies? Additionally, are there any security measures I should take when buying Siacoin to ensure the safety of my investment? I'm new to the world of cryptocurrency and would appreciate any guidance you can provide.