Important factors include usability, integration capabilities, task tracking features, collaboration support, and cost. Ensuring the tool aligns with the team's workflow and can scale with project needs is essential.

Start with assessing team requirements, select an appropriate tool, provide comprehensive training, gradually transition from old systems, and gather feedback for continuous improvement.

Challenges include poor communication, unclear objectives, scope creep, resource allocation issues, and inadequate risk management. Addressing these proactively can improve project success.