Read "The Iliad" by Homer for free. A classic public domain work covering achilles (mythological character) -- poetry, classical literature, epic poetry, greek -- translations into english. Available in full text from Project Gutenberg.
Achilles (Mythological character) -- Poetry
Classical literature
Epic poetry, Greek -- Translations into English
Trojan War -- Poetry
This book is in the public domain. Free to read and download from Project Gutenberg.