There are literally 1000s of Linux reference and resource links that are published on the web.  The following links are various resources that I have used in the past.  If you know of an outstanding link that is missing from this listing, use the comments area below the links listings for your submittal.

Linux Printing Database - The Linux Open Printing Database ( find your printer and associated driver here)

Network Printing - Setting up network printing in the Ubuntu and derviative's enviroment

Supported Hardware - Ubuntu (and deriviatives) hardware compatibility cross reverence

SANE Supported Scanners - Supported scanners listing

Tuxfiles - A  general reference for Linux

Psychocats Ubuntu Reference - A good overall reference site

SAMBA - SAMBA filesharing official site

SAMBA Setup Tutorial

NFS - Setting up NFS filesharing (Linux-to-Linux)

Linux BASH commands - A good listing of the more commonly used commands

Beginner's BASH programming - The title says it all

Restricted Formats - Installing and using restricted (multi-media) formats in Ubuntu and it's deriviatives

Mediabuntu - Setting up the capability to view/use mulitmedia apps in Ubuntu and it's deriviatives

Data Recovery

TestDisk - A step-by-step paper on data recovery using the TestDisk application

Securing Debian Linux - A comprehensive manual of various aspects of securing Debian Linux installations (includes Mint and Ubuntu)

DD Command - A tutorial on the application and use of the DD command

CRON - A how-to on the CRON application / event scheduler

LAMP Setup and Install - Long version

LAMP Setup and Install - My short, easier way of installing LAMP