Well, first you should know what Market , would like to be Trading ? Nasdaq or NYSE ?
-in case of Nasdaq stocks, you should follow in pre-market Nas Futures( COMPX symbol on iqc.com ), closely related to sectors
( SOX, GSO, etc). Then, go for the strongest (+1%) and/or the weakest ( -1% ) sectors !
- in case of NYSE stocks, then you need the SP500 Futures and
Cash, Fair Value, Premium/Discount, etc.
In case you decide on NYSE stocks, the best education available,
out there in the jungle, are Don's classes !
ONE THING : do not imagine, that you will digest all this info,
about Fair Value, in a couple of explication lines or a few hours
of reading. You really need a professional, to guide you, AT LEAST,
at the beginning... Otherwise you'll pay your tuition, to the Market, if you forget to do your Due Diligence !!!
Hope all this helps !
MD-doc