Hi dd, welcome to the forum! There's a wealth of information to help you on your credit journey.
But firstly, I had a hard time wading through your post, since there was no paragraph breaks. If you are in Firefox, look down at the bottom of the text screen you are typing in and check the box in the lower left hand corner. That will provide you with line breaks, making for an easier read.
Now, to address your concerns. Right off the bat I can tell you, that Amex is NOT the ccc you want to contact in trying to establish a credit history. I'd suggest anyone but them or Discover. Look to the black menu bar, on the right to "Get a Credit Card". Play with it for a while. There are lots of websites like that.
I'd suggest Cap1, or maybe Cit when looking for a starter card. Also consider getting a secured card. Almost all ccc's have them.
I also suggest to read, read, read all you can right here in the forum. Learn what other people did in a similar situation as yours. Educate yourself on the subject of personal credit.
I'm sure others will chime in shortly giving you their thoughts. Good luck to you!