Basic Practice Drawing in AutoCAD

An isometric drawing in AutoCAD for practice shown here...

Component 1

1. This is simple part sketch for beginner to learn.
2. It includes sketch commands like
• Line
• Rectangle
• Circle
• Trim
• Extend
3. It includes features commands
• Extrude
• Extrude cut
• Basic Plain selection

You got an idea from where to start sketch and selection of units,  UCS, and also sketch in different view or different plane. It helps to get better understanding of different views which gives you a real life part modelling experience.