How to get hash value?

So, how exactly do we go about obtaining a hash value in the realm of cryptocurrency and finance? Is it a complex process that requires advanced technical knowledge, or is there a simpler method that even a novice can follow? And what significance does this hash value hold within the blockchain system? Are there any specific tools or software that we can utilize to generate these hash values efficiently and accurately? Additionally, are there any potential risks or challenges that one may encounter while attempting to obtain a hash value, and if so, how can we mitigate them? I'm eager to gain a deeper understanding of this crucial aspect of cryptocurrency and finance, so I'm hoping you can provide me with a comprehensive yet concise explanation.