Legally there is no problem if you make up your mind for marriage. What matters is the willingness of both the parties. 

Not at all, live-in relationship in India is neither sin nor a crime. The Apex Court of India has not considered it illegal. 

The registration of marriage is necessary for every couple as it works legally in various domains of life.

The girl should be 18 years old and the boy 21 years old to get married in India.

You can file a joint petition for mutual divorce which is the quickest way to get divorce. For a mutual divorce, both the partners must be ready while filing a petition to seek divorce from each other.

The Special Marriage Act allows you to marry that girl, in case no one of you wants to change your religion.

Each and every state in India has different policies and rules for buying and selling properties. You should go through them through reliable sources before thinking about it.

You must have achieved the age of 21 years and a piece of self- occupied property. A regular source of income is also desirable.

The term benami has originally been generated from Persian language which means property without a name.  Section 2(a) of the Benami Transactions (Prohibition) Act, 1988 states , “‘Benami transaction’ means any transaction in which property is transferred to one person for a consideration paid or provided by another person.”