How do I scan and recognize text?

Hello, could you please explain to me in detail how one can effectively scan and recognize text from various sources, such as images or documents? I'm particularly interested in knowing about the tools and software available that can help automate this process, and any tips or tricks to ensure accurate and efficient text recognition. Additionally, could you discuss the potential challenges or limitations one might encounter when using these methods, and how they can be overcome? Thank you in advance for your insights.