The following pronunciation guide using IPA symbols is for Standard Alisian. Also known as International Alisian and Received Pronunciation (RP) Alisian. Although it is considered snobbish by some, it is generally understood by all French speakers.
The approximation column is a hint for beginners. In some cases it is very close, and in others it leaves something to be desired. The best method is to listen to a real Alisian audio within the book. In the approximations you will see that they follow the IPA symbols. For example: [a] and [ɑ] will always be [ah], [ɛ] will always be [eh], [i] will always be [ee], etc.