They said this was being offered originally at 29 dollars a share but
opened at 50
does anyone know how people got in at 29 or 30?

it wasnt offered in pre-market(or was it?) so how did people get in so
cheap?

$29 is IPO price, but small investors like myself don't get the
privilege to get it at that price unless your broker has access to
IPOs and offers you shares at the IPO price.

You had to be on the IPO list with major broker houses.  For example
Fidelity had as an offering but you had to indicate to them your
interest (how many shares) you are interested in buying.  However, I
had a friend that had wanted 500 shares and he was on the indicated
list and he only got 100 shares at the $29.00 price.  So he has a nice
profit in his wallet.

However to be considered for most IPO's you need to have at least
$250,000.00 yes $250K in assets to be considered...good luck in
trading and hope this answered your question.