It does take awhile to get used to doing, and 6 months into charting I still have questions about it. TCOYF has pictures and descriptions of CM. Fertility Friend also has good descriptions. I find that paying attention to what's in my underwear can help me figure out my CM, too. (Another tip I picked up from TCOYF!)
Warning
No formatter is installed for the format bbhtml
Re: CM
You should really get a copy of TCOYF and read it.
And also go through the tutorials on FertilityFriend.com
Here's the link to their info on CM
Also, check out feritilityfriend.com and use their tutorials.
EDIT: Ooops, didn't reply quick enough!
Please see www.fertilityfriend.com for instructions and please read TCOYF.
And no, this is not TMI.
The book. And the charting website. Do your homework and it will become clear.
GL.