Let's think about it this way for a moment
Besides the Raspberry Pi board itself, you'll need: a MicroSD card (16GB+ minimum, to hold the OS), a power supply (voltage/amperage requirements differ by Pi model, so an official adapter is best), a case (to protect the board from damage and dust), an HDMI cable + monitor (for desktop-mode setup — not needed for headless mode), and a USB keyboard/mouse (for initial setup). All of these are genuinely necessary.
Let's connect this to a real-world scenario
Beginner starter kits bundle all these accessories together — much more convenient for a newcomer than sourcing each piece separately. Look for a MicroSD card rated 'Class 10' or 'A1/A2' for faster OS boot speed — a cheap, slow SD card can become a real performance bottleneck.
Let's look at an example together
Shopping checklist
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[ ] Raspberry Pi board (Pi 4/5 recommended)
[ ] MicroSD Card 32GB+ (Class 10 / A1 rated)
[ ] Official power supply (correct voltage/amperage)
[ ] Case (optional but recommended)
[ ] HDMI cable + monitor (for desktop mode)
[ ] USB keyboard + mouse (for initial setup)You can lay out the complete accessory list needed to start a Raspberry Pi project.5-Minute Try-It
Research this shopping checklist against your local online shops (or a local electronics store) — check availability and prices.
A quick word of caution
A power supply that isn't official/certified can cause undervoltage (insufficient voltage), which hurts the Pi's performance — a lightning bolt icon on screen is an undervoltage warning.