Crucial has compatible SSDs for your laptop. The M.2 drives will be faster than the SATA drives. You can choose other brands, but that page will give you an idea and also Crucial drives are guaranteed compatible. For installation, follow the steps in Dell's Service Manual. I would have linked directly to the manual for your model, but the correct manual depends upon whether your laptop has an optical drive or not. This page has links to both Service Manuals. Whenever touching components or working inside a computer, wear a grounded wrist strap, also called anti-static wrist strap, ESD wrist strap, or ground bracelet. It's a cheap and sensible precaution. Rest the laptop on an anti-static mat or at least a reasonable alternative such as corrugated cardboard.  
Hello,   I have Dell Vostro 3590. I wish to upgrade my laptop with SSD. Please suggest a compatible SSD for my laptop.
SSD for Dell Vostro 3590