You can achieve a good level of knowledge and understanding of the BABOK® v3 Guide simply by studying the content of this study guide. However, in order to get the most out of this study guide and your exam preparation efforts, I do recommend that you also refer to the BABOK® v3 Guide as part of your study activities.
Prior business analysis experience would be highly beneficial when reading the content of this study guide; even so, if you are new to the business analysis profession, you will still get a lot of value from the practical examples covered in this study guide.