The Foreign Marriage Act was enacted to facilitate solemnization of civil marriages by Indian citizens in foreign countries.
Like in the Special Marriage Act 1954, under this Act too solemnization and registration of marriages are parts of the same transaction. The procedure for solemnization and registration of such marriages is more or less the same as under the Special Marriage Act 1954 (Sections 5-13). Marriage Certificate Books are to be maintained in all Diplomatic Missions. There is no provision in this Act for transmission of records to any general registry of the country. Besides solemnization of new marriages, this Act also makes a provision for registration of pre-existing marriages solemnized in foreign countries under the laws of those countries.
1.If that country law permits you to marry as per the their traditions and custom, you can very well marry her.
2. You can first apply for tourist visa for 3 or 6 months, and after registering the marriage, you can apply for extension of visa and thereafter for permanent visa to her on the basis of yor marriage with her.
3. You can get it registered in the Indian consulate which will relieve you from observing the formalities in India to register yor marriage here once again.