Quote from Cheese:
So learning one market is the best option for the lone amateur. Despite much of what you may read at ET, if you get to know one market expertly you will find that knowledge transfers to other markets later. If you devise or adopt a reliable methodology which you get to apply successfully in one market, that transfers to other markets later.
I will confirm this has been my personal experience. I'm an amateur who flailed about for quite a while trading this stock and that stock, mostly counter-trend trading. Sometimes I'd find that trading a certain stock again and again, I got to "know" it and could almost extract money from it at will. After experiencing this often over time, I realized that if I focused on a very narrow group of stocks that fit my personality (which is ADD, requiring quick decent moves for me to trade in and out of), I could make trading a predictable source of income.
I finally broke through a major set of barriers recently. I'm now a trend-follower and breakout trader who trades 4 stocks 95% of the time with an occasional outlier when I see something interesting hit the hi/lo ticker.
My next goal is to transfer my overall trading skills to CL and possibly trade it exclusively. In my sim account, CL has been a serious outperformer.