The versatility of transition words makes them easy to place throughout an essay. Knowing where to place these words or phrases allows writers to easily insert them where needed.
Clearly, transition words can be used in so many places that they can be overused. The key to using them efficiently is to add enough to make the reader understand the points being made without using so many that the phrases become cumbersome. A balance should be maintained; however, there are no rules as to how many or how few transitions should be in any particular essay.
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To include transition words, first the essay must be written and edited. There is no sense spending lots of time on transition words if the writing lacks content, organization, or contains many grammatical and mechanical errors.