MacBook Pro 15" Unibody Late 2008 and Early 2009 Hard Drive Replacement - iFixit Repair Guide
Best SSD Upgrade for Old MacBook Pro (3 Great Choices)
How to add a fast new SSD to your old Mac or MacBook for only $150 - 9to5Mac
How to Upgrade MacBook Pro Hard Disk, Late 2008, 15-Inch: EveryMac.com
OWC SSD Upgrade Kits For MacBook (2008 - 2009)
How-To: Upgrade the SSD in your MacBook Air or Retina MacBook Pro, boosting size & speed - 9to5Mac
2008 Macbook Ssd Factory Sale, 51% OFF | ilikepinga.com
Photo tutorial: Upgrading a MacBook Pro with an SSD
How to Add a 2nd Hard Drive/SSD in a 15-inch MacBook Pro (Late 2008) with OWC Data Doubler - YouTube
MacBook Pro 15" Unibody Late 2008 and Early 2009 Hard Drive Replacement - iFixit Repair Guide
Installing MacBook Pro 15" Unibody Late 2008 and Early 2009 Dual Hard Drive - iFixit Repair Guide
13-inch MacBook Pro Mid 2009 Hard Drive/SSD Installation Video - YouTube
How to speed up an aging MacBook with a solid state drive | Ars Technica
Even after 12 years, my late 2008 MacBook Pro hasn't given up. Upgraded it to 8GB of ram, added an SSD, and patched it with MacOS Catalina. Still use it everyday. :
OWC Data Doubler: Get 2 Drives in your MacBook Pro
MacBook late 2008 SSD Upgrade - YouTube
OWC SSD Upgrade Kits For Mac Pro 2008
Installing SSD (Solid State Drive) in Your MacBook Pro 13" or 15" Unibody : 24 Steps (with Pictures) - Instructables
RAM upgrade and/or SSD drive – what's the benefit?