Editor's Note: The following are questions received from viewers of "Mad Money," seen every day at 6 p.m. EDT on CNBC.

Booyah, Jim! What do you mean when you talk about limit orders?-- Ray from North Carolina

James J. Cramer:

A limit order is an order to buy a stock up to a certain price point. For example, if you placed an order for 100 shares of

Google

(GOOG) - Get Report

with a limit of $285, your trade would not go through if the stock price went above $285.

How can I buy shares in IPOs?-- Joe from Portland

James J. Cramer:

To buy shares in an initial public offering of a stock, you must contact your broker to see if you can get in on it. Brokerage firms often have rules and restrictions for IPO buyers, such as account size and trading frequency, and may even require you to hold the stock for a certain period of time. Just keep in mind that outside of auction IPOs like Google had, the best IPOs are usually reserved for large institutions and very wealthy individuals.

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