Edit your 'my-default.ini' file (by default it comes with commented properties)as below ie.
basedir=D:/D_Drive/mysql-5.6.20-win32
datadir=D:/D_Drive/mysql-5.6.20-win32/data
port=8888
There is very good article present that dictates commands to create user, browse tables etc ie.
http://www.ntu.edu.sg/home/ehchua/programming/sql/MySQL_HowTo.html#zz-3.1