Caution: the pursuit of climbing may result in severe addiction to rock and heights. Additional side effects may also include: absenteeism from work/school/relationships and the inkling to start an outdoor equipment retailer.
The type of shoe you select depends on your climbing style and whether the shape of the shoe fits your foot. Crack climbers, boulders, alpinists, and gym climbers may all choose slightly different styles.
Choose a harness that suits the type of climbing you do. A seat harness is common for gym climbing, cragging, and multi-pitch rock routes.