In both papers, concern yourself with the high-level ideas. You don’t need to understand all the mathematical details (but give it a shot!) and you can of course skip the appendices.
There is also a less technical treatment of these concepts which may be easier to follow for you.
Open GAN Problems: To get a taste of unanswered questions.
Adversarial Audio Synthesis and GANSynth if you want to see some non-image applications.
Feel free to share additional papers or other resources you come across!