Unless youre playing on the $0.25/0.50 tables or their equivalent, £0.15/0.25 - I wouldnt bother with trying to get rake back tbh. The amount will be very small. I would only worry about rake back if youre gona try and earn some decent money at poker and be taking it 'seriously' as it were! It all adds up at the end of the month.
The bonuses of $40 and $90 I talked about are nothing to do with rake back I would like to add incase you get confused. These are just monthly bonuses the site give you for playing there. You have to play a fair bit to get the bonuses released to you however. Its not worth playing poker just in order to obtain these bonuses if you werent intending to play anyway. But if you
were going to play a lot anyway, theyre certainly a very nice addition
Any other questions im more than happy to answer especially if I havent made these answers very clear

(but not the next few days cos im going to Budapest

)