Capital 1st Transportation was promised pay ($3000) for training and reimbursement for purchasing computers and was never paid. Internet

The "training" you did probably was nothing more than "busy work" that your average high school student would laugh at how easy it was.  That is why you finished it ahead of schedule.  Are you really trying to say that you saw no problems with someone paying you $3,000 for buying a computer and shiping it to the Ukraine?

If you haven't heard of Money Laundering perhaps you should go look that up.  Then take 3 guesses as to where that computer went.  If you want a hint I will tell you that it wasn't to some School Student or a Stay at Home Mom. 

These people are in a Foreign country using fake information.  The chances of them getting "nailed" is about zero.  But if on the off chance they are caught the officials will get the serial number off of the computer.  From that they may track it back to you.  If that happens you may want to think about what you are going to say if the FBI shows up at your door one morning.

There is no "easy money".  You don't have a dead relative in Africa, you didn't win the Microsoft lottery, you are not going to get paid several hundred dollars to go shopping, there isn't a service member in Europe looking for a babysitter for their kid.  In short if anyone you don't know sends you a check and wants you to send them money back, it is a SCAM.  If someone wants you to order merchandise and send it to a foreign country it is a SCAM.  It does not matter what reasoning they give you.