So, here's the lowdown: you can use a bunch of different apps and services to send texts from your PC to your cell phone. Some popular options include MightyText, Pushbullet, and AirDroid. These services let you sync your phone and computer, so you can send and receive texts from either device.
It's actually pretty straightforward to set up - just download the app, follow the instructions, and you're good to go! You can even customize your experience with different notification settings and integrations with other apps.