Project Gutenberg has digitized nigh every book in the public domain and made them available online and for download as a PDF, EPUB, or Kindle book. MIT hosts the Shakespeare’s complete works for free (but I’d prefer you borrow my personal copies so you can read with Norton footnotes). The Library of Congress also has a number of free books scanned for kids, teens, and adults.
The public library is, arguably, the greatest contribution of the West. Kudos to Ms. Getman for upholding its fine legacy at Jennings Senior High; take advantage of her expertise! A kinder librarian cannot be found. For a larger collection, check out your local St. Louis County Library—look online for usage information, books, research resources, and teen programming.