I use E-Trade, and just Yahoo.com, and other various business sites where you can learn about a stock, but my main one is E-Trade where I buy and sell stocks. There are others that are probably the same or cheaper, but I started with them, and the trade cost was pretty cheap. At one time when the market was doing well, I was doing great, then came the Internet crash, and I lost a number of investments (including E-Stamps at one time), but ultimately, I did ok. The last best investment I did was by WNI (Weider) at about $2 and sold it at $6. But lately, everything is status quo so I have been dealing mostly in Growth & Income Funds, which are doing pretty well.