Promo-steem steem-ambassador

hi steemian friends this time i want to promote my steemit. I also joined # promo-steem @ steem-ambassador.
I did not understand about post in steemit and after I learn from college friends now I can understand it a bit though I also often see popular postings like post @ good-karma @surpassinggoogle hr1 @bue @grumycut and others I did not mention here.
I am very happy to join steemit.
Thank you very much