TES Global
Blendspace: Sound Devices
A seven-part learning module with links to videos and a website to use while learning about literary devices relying on sound including alliteration, onomatopoeia, rhyme, repetition, and poetic meter and rhythm.
Other
Bob's Byway: Glossary of Poetic Terms
Calling itself "unique," Bob's is easy to use, with cross-links throughout, phonetic pronunciation guides when necessary, and many examples and quotations. Click on the letter and scroll for the word.