The most important first step is to have any concerning growths evaluated by a Board Certified Dermatologist to confirm that they are harmless.
Treatment for most moles or tags is usually a simple, quick, in office procedure-- but will vary depending upon the actual type, size and location of the mole or tag.
Most tags can easily be easily clipped at the base or lightly cauterized. These heal very quickly and well.
A true mole can usually be treated with a simple shave removal or excision, whcih requires a few sutures. Which procedure is best will, again, upon their size and location.