Over the past decade, the baht has fluctuated somewhere between 30 baht per dollar and 42 baht per dollar.
In Thailand there are 1 baht, 2 baht, 5 baht and 10 baht coins and 20 baht, 50 baht, 100 baht and 1,000 baht notes. You may also occasionally see a 10 baht note, although those are no longer printed.
Baht are further broken down into satang, and there are 100 satang per baht. These days there are only 25 satang and 50 satang coins. Satang are rarely used anymore for most transactions.