Pathfinder Minus Front
1. Have 2 overlapping shapes selected. One shape will be in the front and this is the cut away shape. (I colored this one garbage green since it will be trashed after we click minus front). (Use fills only)
Shape Builder (alt/option) Delete
2. Have 2 overlapping shapes selected and click the Shape Builder tool. Hold down alt/option and click on areas you wish to be deleted. Wait for the shape to grey out. (Use fills only)
3. Have 2 or more overlapping shapes selected and click on the pathfinder unite button. The 2 shapes will merge together. (Use fills only)
Shape Builder- Combine Shapes
4. Have 2 or more shapes selected and then click on the shape builder tool. Click, Hold and drag across the shapes you wish to combine. Do NOT hold down alt/option.