Congrats, you survived day one in the desert. Give yourself a hand. *slow clap*. Your adventure continues, and boy what an adventure it has become. It now seems that being buried in sand was probably as good as it gets for you in this dry wasteland. As with before, search around for things that are special or may prove useful with information or for some other purpose.
You're still in the early stages of your desert ordeal. Try to keep it together, avoid piles of sand or dust devils or anything else that likes to bury you in sand!
Solve the puzzles and do things in a logical manner and you will resolve your current situation. Good luck and I'll see you on Day 3... if you survive that long