Moving to Madrid from Dubai..

HI All,

I am new to this site and i tried to figure out what is the best place to live in Madrid . I am moving to Madrid from my company as an intercompany transfer from Dubai.. My Department head office is located there . Would like to ask your kind support by letting me know below details.

* Correct Tax calculator for salaries in Madrid Spain . I am bit new for this tax thing since here in DUbai we are getting TAX free salary.

* What is the best place to live in Madrid. If any expats nearby would be really good for time been until I learn spanish.. For now I am Zero in Spanish I keen to learn spanish anyway..

* Best Website to check for an apartment ?  . Preferably  I am checking two or one bedroom apartment around Madrid with easy access to Subway Metro.

* What will be the Cost ? If you can help me to get general idea would be fine.

* Would like to learn Spanish? Any recommended places or tutors?

* A Place to play Table Tennis ? or club . I am middle advance player and must continue with it  

Look forward your replies to me. Thank you..

Cheers
Sam