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theres a ton to know. first off, steempeak is a front end site you can post on like steemit, except improved. there are a dozen or so such front ends, some for specific tribes. tribes show your interests. for instance creativecoin is for artists, writers and musicians. leo is for investers and traders, palnet is a general group for active steemians.
http://minnowpond.org/ << invite for pal discord. PAL has a chat function, a radio station with live shows, a help channel for questions, and lots of discussion areas. you can meet new people to network and add to your reader - friend list. i put a bunch of links below to give you an idea of the scope.
https://steem-engine.com/?p=balances&a=torico << steem engine is a wallet where tokens are kept. its like another level of steem to earn on

https://steempeak.com/keychain/@steempeak/get-ready-for-keychain-on-steempeak-com
https://steempeak.com/tribes/@aggroed/tribes-a-steem-engine-vision-for-crypto-based-communities
https://steempeak.com/steemengine/@steempeak/steempeak-now-displaying-steem-engine-tokens-in-wallet-page

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