Tracking Investments

After reading a few books on investments and really liking the idea of money working for me rather than the other way round I decided to dip my toes into the world of buying and selling shares. Actually just buying as I have not sold any yet. It is all small amounts and more an experiment to see if I like it. 

One thing I had not really thought about much was how to track my returns and how to compare it with other metrics. As I am trickling money in every few months it seemed quite tricky. Until I read this

The idea of having units and then buy units as I invest seems quite obvious now I have read the article but it had not occurred to me to track it that way. So a few quick adjustments to my spread sheets and I can now see how well my rather meagre investments are doing.