Online trading for europe based NRI

#1
Could any expert help me to let me know which online trading facility should I use. and why are you suggesting that?? Plz discuss on that.

To tell you guys further that
1 I am not a frequent trader. Just only when full moon... :p
2. Intrested mainly for IPOs online. may be some times secondray too.
3. Longterm invsetment options mainly.


Have wounderfull day and good luck in your investment.
Regards
Bharat Fumakiya.