If you're going to make it in the 'Verse, you're going to have to find a way to earn some credits. The Contract Manager on your mobiGlas is full of employers looking to hire skilled individuals just like you. Press F1 to start browsing through available contracts Delivery, Mercenary, Bounty Hunter, or Investigation jobs. After accepting an assignment, pick the right ship for the job, then set out for the correct location by using the Starmap on your mobiGlas.
Once you have completed your contract, you'll have solidified your reputation as someone who can get things done and earned some aUEC to spend in-game. This Alpha-exclusive form of credits, different than the standard UEC, has been implemented to help with testing the game by allowing players to temporarily acquire the weapons, armor, clothing and ship components available at the shops you'll find around the various space stations near Crusader. These temporary funds and items may be reset between patches.