What if you find some thing wrong or missing

General

You can just send email to barmeir at gmail.com to complain about it. You also can help solve the problem fill the omission. In either way, you should contact Potto so your complain can be heard and perhaps you can help solve it.

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About Potto Project

Potto Project has been created by Dr. Genick Bar-Meir and friends to build open source software and open content textbooks for college students. Over 500,000 (half million) Potto Project books were downloaded from 165 different countries since 2005.

Potto Project is under open content licenses, which means that you will always have the freedom to use it, make copies of it, and improve it. You are encouraged to make use of these freedoms and share the textbooks and program with your family and friends!