I remember feeling like this when I started charting too. But the more you read the more you understand.
Get a bbt thermometre I got mine out of a pharamcy called Boots. It stored the last 90 temps on it and made it into a chart. You can also post your temps on a website called fertilityfriend.com and it will work out when it thinks you have ovulated.
Also get used to checking your cervical mucous when you go to the bathroom, as you enter you fertile phase you mucous will be clear and thin and stretchy, like egg white.
To be honest I charted for the first 3 months of ttc, and it stressed me out I had no idea what was going on with my temps and I just didn't trust it. So one the fourth month I used ovulation predictor kits and just bd every day from before i thought I ovulated right up to about 10 days later, i watched for my mcous changing and for ovulation pains. And I just went for it. I got my bfp last month!!
Alot of people prefer to chart, you should read some of the older posts in the charting section of the ttc forum, there is lots of great advice and alot of women who actively chart who would be able to help you much more than me!