When starting use of pressure therapy equipment, the best first step in my opinion is to educate yourself on the specifics of your condition. What sleep apnea does to a person's health is truly devastating. The more you know about what you are preventing, the more committed and patient you will be when in comes to using your equipment. Put very simply, you need the right mask for you in the right size, it needs to be kept clean, your tube needs to be controlled to prevent leaks, and the right amount of moisture needs to be maintained to prevent drying out your sinuses.
There are a number of good books on the market now that cover in good detail the specifics of getting started. Simply type "CPAP" into the search bar of your favorite on line book vendor and you will see quite a few choices.
Author of a book designed to help new users of CPAP.
Second ediition now available at your favorite on-line book retailer.
If you have an interest, please PM me or hit the website button.