//There is more than one thousand ways to pick one stock. and many books on this. basically whatever ways you are using ,
1.you get the information,
2.analyse the information and
3.make decision.
3 steps. the above you described are the ways to get information. It is just step 1.
some people using fundamental analysis, some people using technical analysis. some people using tossing a coin , some people using pure luck and instinct.
choose the best way working for you. as long as it makes money for you.
if the data is really good and no other place give you free one. monthly fee is also acceptable what.
If you need free Metastock data, I just posted 20 years metastock data in my blog. please allow me to make some "commercials" here.
3)那位高手可以介绍下比较熟的broker，听说这样可以把佣金调低点。
no way. brokerage fee are set by brokerage company. however, good brokers can help you execute your order using your internet brokerage account, not using broker's account, which can save you some $$
