re:
“I want to upgrade the hard drive and RAM in my old mid 2010 13" 8GB MacBook Pro too. I just upgraded the OS from 10.5 to Sierra and things seem pretty slow now. How do I copy everything from the old hard drive to the new one?”
CarbonCopyCloner will do the job, and even copy the recovery partition, as well.
You can download CCC for FREE, and use it (fully functional) FREE for 30 days. It’s the “tool you want to use” for the job.
For a 2010 MBPro (I have one too), you don’t need to worry about paying extra for “the fastest” SSD available. That’s because a 2010 MBPro has only “SATA-2” (instead of SATA-3, which most 2.5” SSD’s are). ALL drives will deliver the same speeds, due to limitations of the SATA bus itself.
I would highly recommend either a Sandisk Plus or Crucial drive (current Crucial “MX300” series looks good).
I would also recommend that you buy an external 2.5” USB3 enclosure, and “prep and test” the new SSD in the enclosure BEFORE you install it into the MacBook. Might save some trouble.
Once the drive is ready and tested, then “swap it out” with the old internal HDD, and put that into the enclosure to serve as a backup.
Go to ifixit.com to see how the swap goes. It’s easy enough for anyone.
Be sure to buy and use THE RIGHT TOOLS FOR THE JOB (shouting intentional).
You need a Phillips #00 driver and a TORX T-6.