I am a SAP BW consultant. As part of project requirement I need sound domain knowledge of SD, MM & FI. I have been searching for a comprehensive document which can help me right now, I have been searching for such document in internet for last 3 weeks but could not find any, Can anybody help me in this.
What is expected of you, after getting sound domain knowledge?
Ask the SD, MM etc. consultants working in that project and they will be able to guide you, from their experience in both this project and in general.
Learning about 3 modules is just an unrealistic target! It takes years to understand and expertise in one module...
Target for one module and learn some processes (beginner knowledge)