B.A

You can prepare through the guidebook of Shaque which you can get from Jamia Maktaba, Jamia Millia Islamia.

Yes, you can. There is the age limit for bachelor degree but no age limit for post graduation.

nowadays the most preferred, is teaching according to your course or else go for higher education in the same field.

Yes, you can. IGNOU and other open universities run bridge courses, so as to pursue Bachelor's degree. http://www.ignou.ac.in/ignou/aboutignou/school/soss/programmes/detail/145/2 click the link for more. There is no need at all for having class 11th and class 12th standard. Alternatively, pursue class 11th and class 12th standard via private mode or get admission in NIOS, then after pursue BA from distance or private mode.

Yes, you can easily get admission in this university .for admission procedure you can call following number 1800 200 0025.
Good luck.

You can go for MBA or CA or prepare for civil service. There are multiple options for you.

Yes, you can apply directly to the college for admission.