This document discusses different types of abstracts and provides guidance on writing an abstract. It defines an abstract as a short summary of a longer work that reports the aims and outcomes of the research. There are four main types of abstracts: informative, descriptive, critical, and highlight. The document recommends structuring an abstract using the IMRaD format of introduction, methods, results, and discussion. It provides tips for writing each section as well as general tips like sticking to the word limit and reviewing other abstracts. The document advises to write the abstract last and avoid adding unnecessary information or referring extensively to other works.