Got it !!!!
I did some training missions.
docking..... is... i mean... first time went fine, i dock perfectly. But after, i took 7 minutes trying to approach the landing dock, without seing the target system... the blue dot system. strange... and some docking look automatic... ??
then i went for real. I did a delivery (bullitin board) of some goods to other station. But didn't had fuel, so i had to pass for 2 systems first and refuel on them.
Earned +/- 5500 in the first delivery. After that i didn't had the time for anything else. Just looked at the buy/sell board of the station.

Is there any way to know prices in a different station? Do i have to write in paper every price i see...?