How do I work out my golf handicap? Me and a friend intend to work ours out and we thought it was just your average score after 3 rounds of golf.

However, I have had a quick look on the internet and it looks totally baffeling. Such as this......

"First of all take your adjusted gross score and then subtract the golf course rating. This can be found on your scorecard, and is in decimal form. The result you get from this is called a differential.

Next divide the differential by the slope of the tees you played from and x by 113 this is called a adjusted differential.

Still going?

Then take the lowest 10 of your last 20 rounds of golf add them together and x by 96%, then divide by 10, drop everything after the tenths and this is your index score."

....Surely this is a p*** take!

Can anyone explain it in lamens terms.