How do you replace a blown fuse at home?

Excuse me, I'm trying to replace a blown fuse at home but I'm not sure how to proceed. Could you please guide me through the process step by step? I'm a bit hesitant to touch any electrical components as I don't want to cause any accidents. Is there a specific type of fuse I should use, or is there a universal one that works for all? Additionally, are there any safety precautions I should keep in mind while replacing the fuse? Thank you for your help.