So I am thinking of writing a Kindle eBook aimed at beginners instructing and teaching readers how to create Websites using <HTML> and {CSS}. If and when I do complete it will take approximate 2-3 months. Do you think its a good idea?

I have enough experience in <HTML> and {CSS} to do this, I'll think it'll be a great project as I'll be creating and launching a tiny product but it will be fun.