Hangars are pretty much useless now.
Everything is in the Persistent Universe.
All of your ships are in Stanton system in the persistent universe.
Use these series of videos to get caught up:
That will walk you through accessing the PU and getting into your ships.
I highly recommend that you go to Arena Commander and familiarize yourself with the controls before entering the PU. And DO NOT start at Port Olisar. That is the worst place to start. Go to Levsky if it is an option and if not go to Area 18 on Arc Corp or Lorville on Hurston. Both of those are major city ports and safe places to start.
Most of all keep in mind that it is still Alpha and nothing that you gain or lose now really matters much as it will all be reset sooner or later.
If you have any other questions don’t hesitate to ask!