I recently acquired a Flipper Zero in order to learn more about pen testing, radio, and for a bit of fun. After using this device for several weeks I have to say it was a great purchase.
What does it do?
Well, its essentially a hacking tool. If you have tech that uses radio this device probably will allow you to mess with it. Its not really something a professional would use day to day but it packs a lot of functionality into a small pocket friendly device.
If you are curious about NFC, RFID, BlueTooth, WiFi(requires module), and other radio applications I highly recommend it. Once you get the basics down I recommend trying out an alternative firmware like Momentum.
Not only does this little toy like device do a ton out of the box it also is expandable.
I will also say that as I've been going down the rabbit hole of pen testing it kinda blows my mind that we don't see more destructive hacking than we actually do. We are very vulnerable and to me it seems that the number of "bad guys" is relatively small. I don't know if that makes people feel any better but I don't think most criminals are really that smart or clever. Those that are likely do not get caught.
If you are a younger person and looking for a good career, pen testing might be a good option. It seems to be a growing field and as more and more of our lives are online or controlled by tech security will only get more important.