Fundamental analysis

Yes, it is important to determine the future value of the stocks if you are planning to invest for the long term. Without fundamental analysis, you can’t become a successful investor.
Yes, I believe that researching and run-in background checks on each company’s growth is necessary if you want to make a successful trade on the long term basis. Analysing the growth of the company and the potential for profit in the future is important before you plan to invest in it.