Lemon,
Forex trading is for very seasoned investors who know what they are doing and make extremely big plays on high leverage. I can't fathom why you would want to anyone, either yourself or your relative, to try and "learn" this as a first method of investing. Out of the 30 posts in this thread so far, only a couple of the guys are being rational. Foreign exchange is not the kind of thing where you read a forum for a couple weeks and then start raking in bucks.
I'm begging you pretty pretty please start with
Investopedia.com Tutorials: Building Blocks and the Basics of Investing and learn from there. If you must have the excitement of high volatility, there are plenty of crazy plays you can make in stocks, so don't think its somehow pussy investing. Really, when you sit down and think about the worlds most famous and successful investors, they were all disciplined and in stocks. Warren Buffet, Peter Lynch, Benjamin Graham, all stocks.
I know everyone wants to have some end-all get rich quick scheme but I'm sure half the people in this thread have never invested in their lives. Forex is just their plan to turn their first $1mm into $100mm or something like that. Please be responsible and put this money in a high yield savings account until you are comfortable enough with index funds and mutual funds.
Right now ING Direct is offering 4.50% APY and HSBC Direct is offering 5.05% APY. Insanely good for liquid accounts that are FDIC Insured.
Savings Account Information Page
HSBC Direct Online Savings Account