| Method | Access Difficulty | Time to Access | Quality of Material | Cost | | :--- | :--- | :--- | :--- | :--- | | | Low (as student) | Fast (within term) | High (official) | Covered by fees/rental | | Direct from Publisher (Amazon etc.) | Moderate (searching) | Variable | High (official) | Standard retail | | University Library/Instructor | Very Easy | Immediate | High (official) | Free (institution) | | Legal E-Book Retailers | Easy | Immediate | High (official) | Standard e-book price |

Most engineering departments have a physical copy of the instructor’s manual or access to digital repositories like ProQuest .