Understanding software operation and using software to solve practical project problems is not always the same thing. A lot of detailed BIM software usage questions are often asked during BIM implementation. Due to the diversity and multi-disciplines of BIM software, users are always facing questions like which method would be the most efficienct or which technique could solve the probelms well. And usually, it's hard to find answers directly from software online help or manuals. The questions and answers in this paper are all from the authors'project practice in the past 10 years. We would not say that these are the only or best way, but they are indeed feasible and reliable.