Studying Her Vikings by Skye MacKinnon is an interesting take on time travel. The book revolves around Lainie, a girl who gave up everything to go to an academy to learn how to travel through time, Time Travel Academy, or TTA as it is referenced in the book.
Now, this book is actually really short, it is only about 50 pages or so. It is broken up into five novellas, in a serial format, that has actually been bound up into one book! I just found that out after I had read this first part, which covers the first five chapters or so of the novel. This was a freebie from the Kindle store so I decided to try it out.