You don’t need much to get started, but here are a few other tools that many stamp collectors find useful:
Glassine envelopes: Thin, transparent, moisture-proof envelopes that protect stamps from air and grease.
Perforation gauge: A tool that measures the number of perforations along the edges of your stamps.
Magnifying glass: Used to inspect stamps for tiny details and condition.
Stamp catalog: A handy reference book with stamp values and illustrations.
Stamp tongs: A tool used to pick up and move your delicate stamps.