Hit the – or + buttons on the gui or on your keyboard to zoom in and out to make your ship larger, or smaller.
Most of what you need to do is shown on the
GUI, except for B to board ship. You can go into the controls in options to change the controls to what you want.
Hail ships, and select non combat missions to earn your first credits, then you can buy better ships, and build your fleet.
Remember to save often! esc – save.
Be careful what you say in dialogs, as some things may seem like hostile actions towards other ships/planets
Each faction has their own weapons, and technology, so choose who you want to do missions for, doing missions, and blowing up pirates in their sector will improve your reputation which you can see under info.
J to open jump map once you have a mission jump to the appropriate system to finish your mission, and go back to claim your reward.
T to target nearest
SPACE to fire selected weapons.
Once you have allies you can hail them to change their battle command such as how they manage their resources in combat.