
Wiley Expert
Mark Horstman
Mark Horstman is a management consultant and co-founder of Manager Tools LLC. He has over 25 years of experience training managers and executives, and has worked with clients across the Fortune 1000. He is a West Point graduate.
2 Courses by Mark Horstman

The Effective Hiring Manager
Build stronger teams with structured hiring and interviewing practices
Learn how to make better hiring decisions by using a structured, practical approach from screening candidates to onboarding new team members. Discover proven methods for setting high standards, conducting effective interviews, and building stronger teams.
Wiley | 2026 | 240 min

The Effective Manager
Completely Revised and Updated
Learn a proven management system focused on direct feedback, coaching, and delegation. Discover practical ways to build trust, drive team performance, and scale your leadership skills in everyday situations. The strategies are designed for immediate use, whether you manage in-person or remote teams.
Wiley | 2025 | 240 min