If your aim is one hundred percent anonymity online, there is yet another system that you may wish to consider called ‘Tails’. Tails is a stand-alone operating system that you download and run from a USB stick.
You use Tails by plugging the stick into your computer. When the stick is unplugged, it leaves absolutely no trace that you were ever on your computer. The Tails USB only connects via TOR. Tails includes an anonymous Bitcoin wallet called Electrum. For more information about Tails see: https://tails.boum.org/
Bitcoin is a ‘digital currency’ or ‘cryptocurrency’. According to Wikipedia, a cryptocurrency is a digital asset that is designed to work as a medium of exchange that uses strong cryptograpy to (among other things) verify the transfer of assets. Cryptocurrencies use decentralised control, as opposed to the traditional, centralised banking systems.