Mechanical Keyboards:

Top Sites:

Amazon Mechanical Keyboards

MechanicalKeyboards.com

Max Keyboard

WASD Keyboards

Massdrop Group Buys

Youtube Videos

Key Caps:

My personal top 3 "top print" keycap preferences:

Best: PBT double shot
Pro - Legends will last the lifetime of your keyboard. Can be compatible with backlighting.
Con - None.

2nd Best: PBT Dye Sublimated
Pro - Legends will last the lifetime of your keyboard.
Con - Legends not quite as sharp as double shot keys.

3rd Best: ABS double shot
Pro - Legends will last the lifetime of your keyboard. Can be compatible with backlighting.
Con - ABS is subject to wear shine.

Video: Keycaps for mechanical keyboards

Reddit Keycap Wiki

Good deals on Tai-Hao 104 ABS Double Shot Keycap Sets, available in 9 Color Combinations

WASD Custom and Full Keycap Sets

Max ANSI Custom and Full Keycap Sets

IMHO Best O-Rings

Other Resource Sites:

1Up Keyboards

Rantopad

Smart Keyboards Solutions

Corus Keyboards

Deck

Deskthority

Geekhack

GoMechanicalKeyboard

I:C

Keychatter

KEYPOP

Keypuller

Pimp My Keyboard

Redit Mechanical Keyboards

Redit Keycap Sellers List

Techkeys

PC Keyboard

Uni Keyboard

Winkeyless

Zeal PC

Clicky Keyboard

SKS Smart Keyboards Solutions

Elite Keyboards

Making Keyboards Smarter:

Autohotkey

Sharp Keys

Touch Cursor

Mac Keyboard on a PC

Whant to use a MAC keyboard on a Windows personal PC?

Then here is an Autohotkey script to remap your Apple keyboard for use with XP through Windows 10 PCs

Github Gist article

;
; AutoHotkey Version: 1.x
; Language:       English
; Platform:       Win9x/NT
; Author:         Matt Heath 
;
; Script Function:
;	Remaps keys when using an Apple Keyboard with a Windows PC
;

#NoEnv  ; Recommended for performance and compatibility with future AutoHotkey releases.
SendMode Input  ; Recommended for new scripts due to its superior speed and reliability.
SetWorkingDir %A_ScriptDir%  ; Ensures a consistent starting directory.

; Volume Controls
;
F10::Send {Volume_Mute}
F11::Send {Volume_Down 2}
F12::Send {Volume_Up 2}

; Play Controls
;
F7::Send {Media_Prev}
F8::Send {Media_Play_Pause}
F9::Send {Media_Next}

; Missing keys
;
F13::Send {PrintScreen}
F16::Send {Pause}

; Task manager
F4::Send, {SHIFTDOWN}{CTRLDOWN}{ESC}{SHIFTUP}{CTRLUP}

; Cursor Movement
;
; cmd + arrows - start & end of lines, with shift for selecting text
#Left::SendInput {Home}
#Right::SendInput {End}
#+Left::sendInput +{Home}
#+Right::SendInput +{End}
!Left::SendInput ^{Left}
!Right::SendInput ^{Right}
!+Left::SendInput ^+{Left}
!+Right::SendInput ^+{Right}

; Desktop rotation ( Spaces )
; Ctrl Left & Right remapped to F18 & F19 which switch virtual desktops ( I use Dexpot )
;
^Left::Send {F18}
^Right::Send {F19}

; Remapping control key shortcuts
;
; copy, paste, save, select all etc
#c::^c
#x::^x
#v::^v
#s::^s
#a::^a
#z::^z
#b::^b
#i::^i

; Keyboard Characters
;
!3::Send {Raw}#
+2::Send {Raw}@
+'::Send {Raw}"