There are at least four different variations within the Baptist denominations. Here are the most basic types there are:
1. Southern Baptists: One of the largest gatherings of single-denomination believers, the SBC has churches around the world and followers on nearly every continent. Founded in the Anabaptist tradition, the Southern Baptists believe that once a person receives Christ as savior, the love of Jesus can never be separated from the person unless they take their own life, among other things.
2. Primitive Baptists: Adhere to the basic denominational doctrine, but abide by much stricter standards governing worship methodology. Usually, a Primitive Baptist church will only assemble its believers once or twice a month, and in many cases, no instruments are present to accompany any hymns (songs) that may be sung. In some extreme cases, there is no music whatsoever, and sermons or preaching may last for hours.
3. Independent Baptists: Also follow the basic tenets and foundational truths of the "Baptist Faith and Message," but do not affiliate with any one convention or assembly. The body of believers is governed within the single church itself, usually by the pastors, deacons, and elders within the church.
4. The General Association of Regular Baptist Churches (GARBC): Based in the midwestern United States, this association also shares the doctrine expressed within the Baptist Faith and Message, but reports to a separate authority than the SBC mentioned above. GARBC also has missionaries spread across the globe, and works to achieve "the Great Commission;" that is, the spreading of God's Word at home and abroad to maximize salvation of the masses.
There are, of course, other variations of Baptists that are out there, as is the case with nearly every denomination, but this overview should give you a good start. See the links below for further help.