The All in One Overwatch Damage Chart

A text chart of character damage output modifiers and primary/ability attacks. This guide applies to Orisa Supercharger, Ana Nanoboost, Zenyatta Discord Orb, Mercy Damage Boost. While it may not be useful to know precise numbers in-game, reviewing resources like this can help you understand when your hero is going to do massive damage to the enemy.

Advanced Zenyatta Guide

This YouTube playlist provides two full hours of Zenyatta guidance -- from abilities to positioning to miscellaneous tips and tricks, this advanced guide provides detailed information with great presentation.