See also Gail's Guide to Transliteration and Pronunciation of the Persian Alphabet:
together with the Numerical Value of the letters (Abjad Reckoning), which is from the book below but posted as a separate file.
See also a glossary with audio recordings of pronunciation at bahaiglossary.org.
Click here to download it: gail_bahai_glossary.pdf.
This book is also available for download as individual TIF images.