Thank you sir Cerberus,
your answer will help me in future and for pointing out my mistakes in detail is very beneficial for me.
As for as my apostrophe and comma mistakes are concerned I admit it.I have asked about it before, in one of my questions here I know my this mistake but I make this mistake because of the keys of the key board, but I will try my best that I wouldn’t repeat it next time.
About the space after full stop and commas are concerned I read somewhere else that there should not a space after a full stop and comma and it was strictly forbidden there. Therefor I don’t give space after full stops and commas, it means that that article or whatever you say was wrong and I should start giving space.
Please guide me, it has become very confusing for me after you have pointed out.
Thanks in advance.