Can I upgrade the RAM of my Macbook Pro?
Yes Macbook Pro could be upgraded to a higher RAM configuration. It depends on the Macbook model that you have.
For Macbook Pro 2011,2012 and 2013, the RAM upgrade is quite simple. You need to open the Macbook and replace it with the upgraded RAM in the provided RAM slots. The youtube video roughly explains the process.
If your Macbook Pro is 2016,2017 and 2018 model, RAM upgrade is not possible. It is not advisable to open the Macbook and upgrade the RAM.