2. You can cancel an order if it is not executed. Bear in mind, though, if you have an open 'market order', it gets executed in seconds.
3. Get Understanding Financial Balance Sheets for Dummies. I read it, it's good. there is also Stock Investing for Dummies. I haven't read it.
1. No
2. Possibly. You can't cancel or amend an order that was traded automatically. You probably can cancel or amend a trade that has been done with a Market Maker (depending on the amount and the share price movement) and if the trade has not yet ben settled.
3. Start with a basic dummies guide rather than jumping in at the deep end.
1.Is it good idea to buy at least one share of every company of same industry so you get financial report of those all companies to study them and compare those companies?
2.Can you cancel an order if it has not been executed? Does an order expire after certain period of time?
3. I tried reading Alexander Elder's and W.D Gann's book on trading and they were hard to understand. Is there any other book that can help me understand better about trading? Thank you in advance.