Read everything, and I do mean EVERYTHING at
Undergraduate Study – EducationUSA
Then contact the counselors at the Education USA advising center in your country. Here is the link that will give you the address, etc.
Educational Advising Centers ? EducationUSA
When you know what is possible for someone from an institute like yours in Uzbekistan, get in touch with all of the teachers, families, and friends you met during your exchange student year in Texas. Some of them may have good advice for you, especially if you want to go back to Texas and need information about specific colleges or cities.
Good Luck!