OK, look away now if you dont want TMI!
clean your hands really well and cut your nails first.
get into position by either putting one leg on a stool or squatting (you must use the same position each time or you will notice a difference in position) If one position doesnt work for you, try another.
use your index finger to reach right inside, make small slow sweeping circles, you are looking for a small "bump" (when non ovulating)
Your cervix is easier to find when non ovulating, it will feel hard like the bridge of your nose, it feels like a very small bump (actually its not the whole cervix just the tip which is why it feels so small) and it will feel "closed" - you wont know what closed feels like until you have felt "open" though)
Close to ovulation time, your cervix feels higher, you really have to reach or maybe wont be able to touch it at all. It also feels softer, like touching your lips, and it feels a bit "open". This can feel like a tiny hole or a slit in the shape of a smile. However if you have had a vaginal birth, you may feel your cervix in a slightly "open" position all the time, this is normal.
You should notice your cervix getting higher, softer and more open over a period of days. When you feel it suddenly closed, low and hard again you know you have ovulated. This should also correspond with your cervical fluid drying up suddenly. Around ov time cervical fluid becomes wetter, more slippery and you are able to stretch it between two fingers for a few inches without it breaking. Non fertile cervical fluid is creamy, pasty, lotiony not as slippery and doesnt stretch between your fingers. Again it builds to a peak and then suddenly dries up after ov. If you dont notice cervical fluid when wiping after using the loo or just showing up in your knickers then you can look for it by sweeping around near your cervix, especially after doing some keegal exercises.
You can get more information on this from Tony Wesclers book or Fertiltyfriend.com
hope I havent put your off your breakfast
, happy hunting!!