I don't want anybody else to have that kind of experience, so here's a little more detail!
- Blueprint cards have a resource cost printed on them. If you don't have those resources available, they won't work!
- Machines that take in / give out cards have a rectangular card-slot above them - some machines only take in cards, others only give cards out - it depends on the type of machine.
- It's common to draw a hand where you can't play anything - sometimes you need to wait for a good turn to get the ball rolling.
Thank you for the feedback!!