BAT stands for Basic Attention Token. It powers a blockchain-based digital advertising platform designed to fairly reward users. -Coinmarketcap
To read its whitepaper or download the Brave browsers, you can go to BAT's official website. The token price has jumped lately prolly due to some FOMO buying from news.
[This guide first appeared in one of my previous posts: Blog rebranding]
BAT token tipping
Content creators can earn cryptocurrency BAT when readers, who find the content useful, drop tips via the BAT tipping function in the Brave browser app.
I have switched to using the Brave browser for a while now since it's UI is 99% similar to Chrome, which I was previously using.
Brave is well-known for its ad-blocking function (no pop-ups, no more annoying guru commercials on Youtube. Yes!) and you can earn yourself some BAT crypto token reward whenever you choose to click ads. The BAT can be withdrawn to your crypto wallet and then be exchanged for cash.