Do you mean DBQ? A DBQ (or document-based question) is common in social studies classes and refers to an essay written using sources, normally timed. Personal strategies I used for DBQ writing when I had to do them in classes like Freshman Humanities and all of the AP History classes include memorizing the grading rubric and outlining my essay before writing. By memorizing the rubric (for an AP test, for example) you can make sure you are getting every point possible by making sure to use the correct number of sources and things like that. By outlining your essay before writing, you are able to effectively map out your arguments, allowing for efficient use of time while writing (having to stop and think about what to write next is always a pain).
If you actually meant a TBQ, I apologize as I do not know what that is.