Welcome! It is a lot to take in but temping and charting is so informative and rewarding! When you temp, make sure it is a basal thermometer. Keep it beside your bed, and set your alarm to take your temp at the same exact time every morning (For me I have to wake up on work days at 5:15 so I set my alarm for that even on the days I don't work and just go back to sleep after). Also make sure you don't move, take a drink, etc before you take your temp. Just reach over, eyes still closed, and pop it in your mouth. That's how you'll get the most accurate temperature readings
Also note on your chart when you have sleepless nights, go to bed extra late, or drink the night before, because those can all cause your temp to be higher than it would normally be!