Free trail brochures are available. As much as possible, BLM encourages Leave No Trace camping, which means that you try to leave the backcountry as unmarred and undisturbed as possible. Most impacts from backcountry use are centered around campsites. Here are a few tips to help lessen your camping impacts. Use gas stoves rather than wood fires as much as possible.
Wood is scarce near treeline and absent from the tundra.
Many popular campsites have been stripped of their wood and some folks in desperation have turned to live trees. Gas is quicker, cleaner, easier and doesn't leave a scar. If you must use a fire, use only down and dead wood. Standing dead wood is important for wildlife and live wood is too wet to burn. Use existing fire rings as much as possible.