From publisher blurb:
Referee and player materials designed for use with Old School Adventures Accessory PX1: Basic Psionics Handbook.
Includes the key information any GM running BXΨ needs at their table, including: the psionic combat sequence, the psionic and attack mode combat matrix, psionic-related attack and saving throw modifiers, saving throws for mystics and monks, chakra attainment charts, PSP costs for disciplines and modes, psionic conversions for adapting creatures and characters from other editions, and key information related to psionic items, magic spells that mimic psionic affects, and how psionics interact with relevant magic spells.
Also includes the following BXΨ Character Sheets: 1 Generic Psionic Character Record Sheet, 1 Mystic Character Record Sheet, 1 Monk Character Record Sheet, 1 Disciplines Record Sheet, and 1 Modes/Conditions/Disciplines Record Sheet.