In one sentence, describe what the following article is about:

Perhaps the most important thing you need to know when measuring your blood pressure are key target levels. Without knowing your target levels, blood pressure results won’t tell you anything.  120/80 and below are normal blood pressures for most people. Between 120 – 139/80 – 89 indicates prehypertension. If you fall here, you should put more effort into adopting a healthy lifestyle. Between 140 – 159/90 – 99 indicates stage 1 hypertension. If you fall here, you and your doctor need to consider a plan to lower your blood pressure. That plan may include medication. 160/100 or higher indicates stage 2 hypertension. If you fall here, you will almost certainly need to take blood pressure medication. Since cuffless technology is in its infancy, you should take a reading of your blood pressure with a cuff before you start taking readings at home without a cuff.  Have your blood pressure read at your annual or semi-annual physical. Visit a drugstore or other location that has a blood pressure reading machine available for public use. Compare any measurements you take at home with your baseline measurement. Record your baseline measurements and home measurements so you have a record of your blood pressure over time.

Summary:
Familiarize yourself with target blood pressure results. Use a cuff to get a baseline reading.