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I've never actually heard of them

Little Bitbar! $0.70! WOW! It's worth more than Steem!
https://coinmarketcap.com/currencies/bitbar/

I'm still new to all this getting there slowly in understanding it all but it really is quite daunting!

Steemit (our platform) is the blockchain and Steem is our crypto-coin. That is the easiest explanation.

Don't worry to much about the crypto-coins, and just focus on the blockchain for now ... that is where the future is at :)

I'll be honest I have to read up on what blockchain actually is I just know it has to do with cryptocurrencies

What are bitbars used for and there's only 29000 of them?

Bitbars are ultra-rare so the price is high. 99.9% of crypto-coins are for hoarding or trading.