Delta V by Daniel Suarez is about asteroid mining in the near future.
Old time writer Poul Anderson has dozens of alien races and space merchants. "The War Of The Wing Men."
Robert A. Heinlein wrote a lot of YA novels that still hold up as stories. Obviously, there are going to be a lot of details he missed, but "Between Planets" is a good adventure story and "Tunnel In the Sky" is the original version of The Hunger Games.
Behind the scenes detail I love. They had a 'clone double' who who would read the lines when two of the sisters were talking to each other. The double had to play as many characters as the lead, and often gave her ideas on how to do a scene. The double was seen in a few of the later episodes.