Welcome Advocate sb on this forum. First, you need to decide why you want to invest in bitcoin? For trading or for long term investments.
For both cases, app ko sab c phelay P2P market place c USDT buy kerna hoga ya direct Bitcoin bhi buy kr saktay hein through P2P.

To see the price of bitcoin , you may visit http://preev.com/

By the way app ka court marriage ka business hay karachi mein ?