"Numbers" fasincate me but I guess you have figured that out by now. Here is one of the reasons why.
If you are in the stock market in any form or fashion then you know the internet has some wonderful tools to keep track of your investments.
I use http://finance.yahoo.com/ to keep track of prices and it also has up to date news on the stocks you have in your portfolios. You can set up as many portfolios as you want and name them anything. They are all "make believe" but they can mirror your real investments if you like.
You can track stocks or mutual funds that are publicly traded. If you have a 401k at work then some or all of your investment choices can be tracked.
I track my 401k, Judy's IRA and our personal brokerage account.
About 2 months ago I bought some Cascade Natural Gas Corp (CGC) stock. It pays about 4.5% dividend. I figured if I can make about 6% profit after commissions in a short period of time I would sell it and not wait to collect 4.5% over a year.
About 2 weeks ago I entered a "limit order to sell" of $21.75 ( limit order means I will not take less than said amount). It is a "good till cancel" order, meaning I can cancel at any time or leave it in place for 30 days. Heck, you already know all this.
Friday it closed at $21.46 and I'm thinking it might get sold today.
Over the weekend it was announced the company was being sold. When the market opened this morning CGC opened for $25.25 and "bang" that is the price I received. How often do you get 15% above your asking price for anything. Sometimes it just pays to be lucky.