Tutorials

How to Build a Custom GPT for Sales Training

A step-by-step guide to building your own GPT for sales roleplay — plus the hard-earned lessons on where DIY AI coaching hits its limits.

Insights

How to Use Gong for Sales Coaching: A Complete Guide

Discover 7 ways to use Gong for sales coaching and build sustainable habits that improve rep performance over time.

Insights

AI vs Traditional Sales Coaching: What's More Effective?

Compare AI sales coaching with traditional coaching and learn where managers still need clear next actions, not just call summaries.

Insights

Sales Coaching Software: What It Should Actually Help Managers Do

Most sales coaching software tells managers what happened. Zell turns calls into coaching to-do lists so managers know who to coach and what to fix.

News

Zell is Now Backed by the European Union

May 4, 2026

Insights

7 Key Sales Performance Metrics Every Manager Should Track

Nov 17, 2025

Insights

Explore effective solutions to common sales training challenges using AI tools for engagement, coaching consistency, and performance tracking.

Nov 17, 2025

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