Surname change after marriage

Sir, I have changed my surname after marriage but I have some queries regarding this - 1. Before marriage my name was Sunita Devi and all my educational documents mentioned it. After marriage I changed it to Sunita Dabaas according to my husband family name, but not my husband used this title can I add it to my name or not. 2. I have a affidavit from my local notary regarding my name change after marriage but he did not mention my old address in it only my new address mentioned it.. can it will create any problems in future. 3. I also have first class megistrate affidavit but it is not mention my father name only my husband name mention in it and this afidevit made from Nashik not my own state I belong to uttar Pradesh is it valid or not. 4. I published my name change in times of India from Nashik because I was living there that time is it valid or not. 5. I also published my name in gezatte of India but only my husband name mention in it and not my father name can it will create any problem. I am thinking about higher education after my post graduation before marriage I did can I apply for this with my new name plz suggest me can it will create any problem in government job. Please help me.