Chess Openings Trainer Lite for Android - Download

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Chess Openings Trainer Pro - Apps on Google Play

Chess Openings Trainer - Quick Start Guide

Training Tactics with Chess Position Trainer - Best Combinations of 2014

Chess Openings Trainer on the App Store

Chess Opening Trainer on the App Store

FRITZ TRAINER - Basic Opening Strategy

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

chessblogger: Chess Position Trainer 4 – Public Beta is out