Upgrading from HDD to SSD

I have a 3-year-old Dell Inspiron laptop with 16 GB DDR4 RAM, Intel Core i7 7500 processor (7th Gen), 4GB Radeon R7 M445 graphics processor, and 2TB Seagate HDD. I have a Windows 10/Kubuntu dual boot. And for the past couple of months, it had been p...