This is good advice but if you're at all nervous about the concept of sharpening blades you maybe should just get someone else to do it. It's not that expensive compared to a hospital bill because you don't get safety intuitively. Sharpening blades isn't hard but there is some dumb stuff you can do (e.g. touching your eyes without washing off the metal bits on your fingers) that is probably more likely to happen if you're super antsy about these things.