Hi I was just diagnosed!

Hi there. Im a 29yr old stay at home to 3…was just diagnosed with sleep apnea last week. I had my sleep study with a CPAP just the other night. The tech said that I should have my machine in about a week.
If anyone has any info for me, when I got to the medical place to pick my machine would be greatly appreciated…anything I should look for or ask…
Thank you
Kelly