The B/X Essentials line is a restatement of the classic Basic/Expert fantasy adventure gaming rule set, given a fresh, new presentation focused on usability:

• Basic and Expert rules seamlessly combined.
  
• Streamlined presentation optimised for ease of reference during play.
  
• Meticulously researched; a guaranteed 100% accurate rendition of the classic rules of yesteryear.
  
• Carefully clarified, ironing out ambiguities in the original rules.
  This second book lays out the standard classes of adventurer and the ways in which characters can spend their hard-earned treasure, including: arms, adventuring gear, mounts, sea vessels, mercenaries, specialists, and (eventually!) castles and strongholds.