Rookie's Guide to XCOM 2

We’ve assembled a brief XCOM training program before battlefield deployment. Carefully consider these tips before engaging ADVENT forces for the first time.

XCOM 2 - Wikipedia

Development order Base development - XCOM 2 Game Guide

XCOM 2: Best Facilities To Build & Upgrade First

XCOM 2: The Best Base Layout

An XCOM 2 Diary: The Wizened + The Doomed, Day 1

What you need to know before starting XCOM 2: War of the Chosen

XCOM 2 Chosen Analysis: The Assassin

XCOM 2 Tutorial: Using the Starting Soldiers mod.

Thoughts: XCOM 2 The Scientific Gamer

Steam Workshop::Psi Rookies WOTC