Baptists are varied in their beliefs so it is difficult to nail down one particular set of doctrines. But, most baptist churches I attended believe in believer's baptism (that is only people who accept Christ can get baptized and not infant baptism), some believe in the gift of tongues but most do not, baptism by immersion as opposed to sprinkling, the Holy Trinity (though most cannot explain it), Sola Scriptura (the Bible as final authority), Sola Christus (Christ is the only way), Heaven, and Hell.
Beyond that, it tends to vary on other things. Some do not support women pastors while others do for example. The Independent Baptists and the Independent Fundamental Baptists tend to be downright wonky as they believe in a young earth (less than 10,000 years old), the KJV as the only correct translation, and favor a very 19th century type "Little House on the Prarie" type of lifestyle.