Chess King's Guide to Opening Ideas - Closed Games 1.d4 or 1.Nf3

Bird's Opening - Chess Openings

Chess Opening Moves III –

Beginner Chess Strategy: 5 Must-Know Tips - by GM Noël Studer

Best Chess Openings: Complete Guide - TheChessWorld

A Grandmaster's Guide to Mastering Chess Opening Strategy

Caro-Kann Defense: Complete Opening Guide - TheChessWorld

Chess Opening Guide - Which Openings Should I Learn?

The 3 Most Important Chess Opening Principles –

Chess Openings : A Beginner's Guide to Chess Openings (Hardcover)

Chess Opening for Beginners: A Simple and Complete Guide to Learning the Fundamental Rules, the Best Opening Strategies Used by Great Players, and (Paperback)