another visa question:as it says "Tourist visa" is 60 days + extension = 90 days for farangs.. AND THEN ? do i have to leave thailand for 3 months ?!? OR is it possible to apply for another "tourist visa" in the next day after 90 days over ?

i mean how often i can get tourist visa? is it X TİME? or it has a limit? for example is it possible to stay in Thailand during 6 monts by "tourist visa" ?? if "yes" how?

p.s. i just ask about "tourist visa rulls" , not about the other visas .. i will be glad if someone knows well about it and back answer me.. thanks

Yes you can obtain and use tourist visas back-to-back. They do not count against the 90 day entry without visa rule.