Our planter has rosemary, sage, parsley, thyme, oregano, basil, and chives - all readily available in nurseries and versatile in the kitchen. Any herbs can be used. If you want to grow mint, plant it on its own in the top pot, since it can overwhelm other herbs.
Place largest planter in the location selected for the herb garden. Center 1 smaller pot within, upside down (with at least 6 inches of space around the inverted pot); fill ring between the two with potting mix.
Repeat to create a second layer with 2 smaller pots, with 4 inches between them. Place final pot right side up on second inverted pot. Fill with potting mix. Plant herbs in all three layers.