No bother at all! There are plenty of things to do, visiting the castle is always a popular thing, it’ll give you a great view of the city. Even just walking around and finding a pub or cafe (there are loads) down some side street is a nice thing to do.
Take a look at thisisedinburgh, it has plenty of info and will be able to tell you about comedy shows, gigs, art shows etc. that will be on when you’re here!