The final chapter addresses common questions that crop up while initiating and executing molecular phylogenetic studies. Topics include marker choice, sampling strategy, which tree-building method to use, treatment of gaps, etc. Further, the chapter explores interpretation of trees and bootstrap values, causes of tree discordance and practical concerns in data analysis. It synthesises earlier material into accessible answers for students and researchers while pointing to pitfalls and best practices. The chapter stresses the importance of using multiple markers, appropriate models and careful interpretation. By anticipating user challenges, it provides practical solutions to typical issues one faces in phylogenetic studies.