Bitcoin is like cash, but digital. You can send money to anyone in the world, shop online, work remotely or store savings.
Like cash, you don't need corporate permission to use it (compared to Paypal). Bitcoin doesn't require a name or government ID, so it protects your privacy (compared to banking).
All you need to do is: Download any Bitcoin wallet to your phone/computer and buy Bitcoin e.g. with a Bitcoin ATM or Azteco voucher. Then you can send it to friends or family, spend it online (AcceptedHere.io, TheBitcoinCompany.com, t.me/BitcoinP2PMarketplace) or hold it as savings (deflationary).
(I have a longer "Introduction to Bitcoin" webpage here: https://anarkio.codeberg.page/bitcoin/ and some infographics here: https://ibb.co/album/ZL768g)