If you are just starting to get acquainted with Raspberry Pi, it is important to realize that besides the board itself, you will need a minimum set of equipment to make it work. You can’t just apply power to a bare board and start using it – you need to prepare yourself.
First of all, of course, the Raspberry Pi board itself. If you’re a beginner, it’s best to start with the Raspberry Pi 4 model – it’s more powerful than previous versions, supports two displays, has built-in Wi-Fi, Bluetooth and full USB ports. You can also opt for the simpler and cheaper Raspberry Pi 3B+ if you don’t need dual-screen connectivity and slightly lower performance isn’t a problem.
The second thing you need is a microSD card. This is where the operating system will be installed and where all the data will be stored. The minimum recommended card is 8 GB, but in practice it is better to take 16 or 32 GB with a high write speed – this will ensure stable operation and fast loading. It is convenient if you buy a card with Raspberry Pi OS already installed, but you can also write an image of the system yourself using the official Raspberry Pi Imager utility.
Nothing will work without power, so you need to take care of a good adapter. Raspberry Pi 4 requires a power adapter with USB-C output and current of at least 3 amperes. For older models – micro-USB with current from 2.5 amperes. It is better to use original or tested adapters, because cheap chargers often do not give the stated parameters and can cause problems.
You will also need a keyboard and mouse – the usual wired with USB. At the first stages, wireless devices may not work without settings, so it’s easier to use wired ones. If you are an experienced user, you can set up the system for remote control via SSH, but this is not the best way for a first run.
The next element is the display. You can connect the Raspberry Pi to a regular monitor or TV with HDMI input. In the case of the Raspberry Pi 4, you’ll need a micro-HDMI to HDMI cable (or an appropriate adapter). For models 1, 2 or 3, a standard HDMI cable will do. For Raspberry Pi Zero – mini-HDMI to HDMI. If you use an old monitor with DVI or VGA, you will need appropriate adapters.
It also won’t hurt to buy a case. It is not necessary, but it protects the board from dust, accidental shorts and drops. For long-term use, a case is a reasonable investment. Often cases are sold in sets together with fans or cooling radiators – especially relevant for Raspberry Pi 4, which can get hot under load.
In total, to start Raspberry Pi you will need: the board itself, microSD card, power supply, keyboard and mouse, cable and monitor. Everything else is optional but desirable. This minimal kit will allow you to start working with Raspberry Pi on the first day, right after unpacking.