Chess Openings Trainer Lite - Apps on Google Play

Daniel Fernandez: Weapons against the Caro Kann - Vol. 1 & Vol. 2

The Classical Sicilian Defense - Chess Opening Trainer on DVD

Opening Repertoire Trainer

Chess Openings Trainer by Jake Pitman

FRITZ TRAINER - Basic Opening Strategy

iPhone Giveaway of the Day - Chess Opening Trainer (with Position Training)

Catastrophes & Tactics in the Chess Opening Workbook - Vol 1: Indian Defenses: Tactical puzzles to help exploit opportunities and avoid disasters in (Winning Quickly at Chess Workbook Series): Hansen, Carsten

Chess Prep - openings trainer by Tomasz Bogun

Chess Chess TRainer

EP 290- Dutch Trainer and Author IM Jeroen Bosch on How to Build an Opening Repertoire — The Perpetual Chess Podcast