It's very easy to use, I was able to set up my first editor in less than 5 minutes! Also it has great documentation which helped me get started with this tool right away without any issues or problems at all so far (as of writing). The fact they offer free plugins for basic features like autocomplete makes things even better. If i had some complaints about summer note would be its UI as sometimes when trying out different themes there are differences between them but nothing majorly bad just minor changes here an dthere. Try using their demo page before starting your project if possible because once you start implementing into live site then most likely you will have customization needs where these demos won't fit properly due to lack off proper stylesheets etc.. So having good knowledge of CSS basics can help solving such situations more easily - no need to ask.