What is the best website for small investments in stock?

All major brokerage firms and mutual fund companies provide their clients with on-line services, including trading platforms, latest market & financial news and research.

Customer need to select the site that is best for them. Traders have requirements in a site, while investors have other requirements.

Although most sites are geared to general securities and commodities, however customers may have special needs for the types of products they trade, and the markets in which they trade. For example I use Fidelity for investing. Scottrade and TDAmeritrade for equities trading and ThinkorSwim for option trading

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It seems that the most popular firms for on-line investing/trading all of which provide excellent platforms and services are; Scottrade; Chas.Schwab; TDAmeritrade; Fidelity; E-Trade, and Thinkorswim. Of you want "cheap" prices and "cheap" everything else go to Sharebuilders but if want quality go else where

Here's some books to read

TO BE READ FIRST - Investing for Dummies by Eric Tyson

24 Essential Lessons for Investment Success by William O’Neil

A Random Walk Down Wall Street by Burton Malkiel

Beating the Street by Peter Lynch

How to Make Money in Stocks” by William O’Neil

One Up on Wall Street by Peter Lynch

Stocks for the Long Run, by Jeremy Siegel

The Intelligent Investor, by Benjamin Graham

What Works on Wall Street by James O'Shaunessey

Your Money and Your Brain by Jason Zweig

Here's some websites you can visit

Investors Business Daily - http://www.investors.com/store/

Investors Hub - http://www.investorshub.com/

Investopedia - http://www.investopedia.com/

Naveller - http://navelliergrowth.com/

1 Source For Stocks - http://www.1source4stocks.com/

Smart Money - http://www.smartmoney.com/

Trading Markets – http://www.tradingmarkets.com/

Zacks Research - http://www.zacks.com/

Good luck, study hard and you;ll invest well

Research

Seems you don't know much about the stock market yet. Everything you've mentioned so far is pretty much opposite what the current reality is. Fees aren't really that low (anywhere from $7+ per brokerage), and basic trading platforms are generally available for free from brokerages. All brokerages allow penny stock trading, since they're just stocks, like any others. It's only limited if you're trying to trade stuff like OTC or similar (stocks under like, 20 cents, that deal in decimals).

You should start at Investopedia, since you can start immediately, without the need of books. Otherwise, I'm sure others will start posting large lists of books you can refer to.