How to Upgrade MacBook Pro RAM (2009, 2010, 2011, 2012): EveryMac.com
A-Tech 8GB (2x4GB) RAM for Apple MacBook Pro (Early/Late 2011), iMac (Mid 2010, Mid 2011, Late 2011), Mac Mini (Mid 2011) | DDR3 1333MHz PC3-10600 204-Pin SODIMM Memory Upgrade Kit at Amazon.com
How to find your Mac's basic specs in OS X - CNET
Fixing a 2011 MacBook Pro booting to a Grey Screen - AMD Radeon Video Glitch | Jeff Geerling
How to upgrade your 2011 or 2012 Macbook Pro RAM (with Step-by-Step photos) – Amanda Xi
Memory/ RAM Upgrades For Apple MacBook Pro 2011 from OWC
Total Solutions to Upgrade Your Mac - Transcend Information, Inc.
How to Upgrade MacBook Pro RAM (2009, 2010, 2011, 2012): EveryMac.com
The Definitive Classic Mac Pro (2006-2012) Upgrade Guide
Bring an old MacBook back to life with Linux | Opensource.com
How to Install MacOS Mojave on Unsupported Macs with DosDude Mojave Patcher | OSXDaily