You will be reading this entire manual titled "Brief Intervention," therefore you may wish to download it (for your own personal use only). The first 3 sections review concepts that are similar to those covered in the ASSIST screening manual, so you do not need to spend a lot of time reviewing those sections. Read sections 4 - 6 that will provide you with new theories and skills for brief interventions. You need to thoroughly understand these sections before continuing on to read section 7. Read section 8 on high risk and injecting clients that will help you understand and apply what you have read in the mhGAP. Section 9 will provide you with case examples of brief interventions. Section 10 to 12 provide further techniques to deliver longer interventions as well as how to include the ASSIST-linked brief intervention in practice.