What are the best techniques for using drywall repair tape to fix cracks and holes in walls?

To fix cracks and holes in walls using drywall repair tape, first clean the area and apply joint compound. Place the tape over the crack or hole, pressing it firmly into the compound. Smooth out any excess compound and let it dry. Sand the area lightly and apply a second coat of compound if needed. Finish by sanding and painting the repaired area to match the rest of the wall.