What do you want to look for when you are buying CFLs?1.
Well first you have to decide where you will use them. A recommended fixture, is one that is left on 3 or more hours per day. You want to replace the bulbs that you use the most frequently first.2.
Make sure it will fit in your fixture. You wouldn't want to spend money on a CFL, and not have it fit into your fixture!3.
Check to make sure that the CFL is energy star compliant. What is Energy Star Compliant? It is a government that regulates programs and products that help save the environment and save consumers money by using less energy through advanced design or construction.4.
Circline or 2D styles are usually best for most table lamps. These also tend to be the brightest options.5.
Choose the Color Temperature, if listed, that's right for you; for example:
Approx. 2700K = Warm White (looks just like incandescent!)
Approx. 5000K = Cool White (White/Blue, often higher CRI)6.
Does your chosen fixture have a dimmer switch? If so, be sure your CFL choice is labeled to be Dimmable.7.
Avoid using CFL's with photocells unless the control is specifically labeled that is it compatible with CFLs. Timers are an easier option
Nowadays, any hardware store should carry CFLs. They are the new fad of course! The HomeDepot website has a very wide variety of them. Home Depot CFLs