Question for Nevadan citizens: How should I prepare for a trip?

For context, I live in the middle of Europe where it's almost always balanced weather and the summer reaches temperatures of 86 degrees Fahrenheit. I know this sounds ironic but I am quite vulnerable to heat, especially humid heat, but regardless I would like to take a trip through the Mojave desert because I am smitten by the landscapes.

Anything I should prepare in advance? Certain clothing items to help me deal better with the heat? Any kind of survival kit? What would be some good locations to visit other than Vegas?