G is for Good

I know for A-to-Z, the concentration is on blogging, but I also do a (nearly) daily vlog over on TikTok. Mostly it is book quotes, but sometimes the viral sounds are just too delicious to pass up. The books presented are: The Enchanted Rose by Emily Leverett (a historical romance series with paranormal elements) and The Royal Nothings by Drew Bailey (an apocalyptic horror fantasy).

Answer this question in the comments – what would you consider a Good way to mark a book you are reading and what would be an Evil way?