This is a guide for how to find writing hashtags and how to use hashtags to grow your audience. Yes, you can make up your own. Yes you can do it to be funny or ironic. However, if you’re using hashtags to be discovered by people you don’t already know or who don’t already follow you, this approach doesn’t really serve you.
This is a free resource but I do require a password to access the library itself. You can get access by signing up here.