For example, are you asking:
* Where can the word "at" be read in an e-book form? (Answer: It can be read in any e-book that contains the word "at".)
* Where can I find the book "At" in e-book form? (Answer: You need to tell me the full title and author of the book you are looking for.)
* Where can I find a website or platform to read e-books? (Answer: There are many options like Amazon Kindle, Google Play Books, Kobo, Scribd, and more.)
Please clarify your question so I can provide a helpful answer.