Adjuncts can be steeped in your boil pot and require no special equipment. Mashing grains require process steps to convert the starches in the grain to sugars. Special equipment is also required. Sack price may be for 50 or 55lbs., depending on manufacturer. Color scale is a Lovibond rating- the higher the number, the darker the grain.
All numbers can vary somewhat.
Use between .75 and 1.5 lbs per 5gal batch. The higher the Lovibond rating the more color the crystal will contribute to your beer. To use, crack grains, steep in a grain bag at 155 deg for 30 minutes. Remove grain from pot and proceed as per basic beer brewing instructions. Crystal can be added to most every batch you make.