Zortags created a wonderful PDF guide about the game. Check it out!!
The guide gives you information on the following topics:
General Information
Character Creation
Races & Damage Types
Resists & Ammunition
Item and Bot Tech Levels
Robots and Mechs
NPC Tier Levels
General fitting
The World of NIA
User Interface
UI Displays
Movement and Travel
Combat Guides
General Combat
Electronic Warfare
General PvE
Ratting Guide
Artifact Guide
Artifact scanning
Artifact types and rewards
Industry Guides
Industry Overview
Resource Gathering
Resources and Commodities
Geoscanner
Mining and Harvesting
General Industry
Research
Prototype Production
Reverse Engineering
Mass Production
Decoder and CT merging