Follow the trend , the trend is your friend
It is not what price you pay that determines if you are gonna make a profit. If you buy it on an up trend, you will make money. If you buy it on a down trend(beginners' mistakes), you will loose for sure.
So, identify the trend, use 50-day moving average, 200 moving day average.
The best way to decide the entry point is to follow the stock daily. Wait until it forms a base. When it breaks out on higher than average volumne, jump in. Get out when the volumn begin to think and the price goes sideways.
I bought Nortel @ 2.00, 4.00 and 7.00. Sold them all at 9.5.
One mroe thing, when the company is receovering, it makes a small profit. The PE ratio tends to be high. I don't pay a damn about P/E ratio. I have playing this game long enough to know that it means nothing. It all depends how much the market is willing to pay.