Don't forget that when you start the sensor, it takes 2 hours to initiate, and then requires 2 BG readings ... best not start it at 1am, unless you are prepared to be awake at 3am! I would buy some skin tac liquid and flexifix tape (I find the 1m x 10 cm roll best). Secure the sensor and transmitter with both of these as I have found once the sensors starts to move, the accuracy drops off.
I cut a square patch of tape, with a whole in the middle to go around the sensor, so it lies flat on the skin. I also have two strips crossed over the transmitter to secure that for when I inevitably knock in on door frames etc. There is a warning not to cover the transmitter, but I ignore that personally, as I couldn't see why it is any different to the layers of clothes I wear, and I have seen no negative affects so far.
Accept that the first sensor run is more of a trial, where you will need to start to learn where and how you should have placed it, and how you should have secured it, and it may not last that long. There are a couple of good youtube videos if you do a search. Personally I have only ever placed it on the back of my arms, but its a horses for courses ... and each person has there own preference about locations.
Calibrate at least twice a day, and aim to do it when you BG is level if possible, rather than raising or falling rapidly.
Download the Dexcom studio software, prepare to revel in the information, realise how blind you were and really appreciate the fact that you are, right now, about to change your life with 288 BG readings in exchange for just 2 finger pricks each day!
Finally, appreciate that whilst I find it incredibly accurate, the readings are a guide, and the true value is putting the trend into context ... not so much where it is, but more where your BG is heading,
