2D 3D CAD Exercises is a free CAD workbook designed for students and learners who want to improve their CAD modeling skills. This Android application offers 50 2D CAD drawings, 50 3D CAD drawings, one assembly exercise, and one helmet surface modeling exercise. The program is an excellent resource for anyone looking to learn or enhance their drafting skills.

The app is easy to use, and the exercises are well-organized, making it an excellent tool for beginners. The exercises cover a wide range of topics, from basic shapes to complex designs, making it suitable for all skill levels. The program is available for free, and additional books are available on Amazon Kindle and Amazon, including 2D 3D CAD Exercises Volumes 1, 2 & 3, 200 - 2D 3D CAD Exercises, Product Design Exercises Workbook of Everyday Things - Volume 1, 2, 3 & 4, and Product Design Exercises Workbook of Everyday Things - Collection.

Overall, 2D 3D CAD Exercises is a great resource for anyone looking to improve their CAD modeling skills. Its well-organized exercises and easy-to-use interface make it an excellent tool for learners of all levels.