How to Harvest and Replant Tomato Seeds

For a about half a year I've had a few tomato plants growing in my window sill. They've grown really fast and got so tall I had to tie them up so they wouldn't fall over. Now I'm about to move and transporting the plants presented a bit of a logistics challenge. Then I figured, if I could just harvest the seeds I could very easily regrow plants when I've finished moving.
This is much preferable because that also means I won't have to fiddle as much with the plants when I'm moving, freeing up time for more important stuff.
I delved deep into several google searches before I found the best technique that worked for my kind of tomatoes. Then I aggregated the most important aspects into it's own tutorial that I shared online.

Introduction at instructables:
In this tutorial I'm going to show you how to harvest seeds from ripe tomatoes. Planting seeds and letting them start to sprout is a nice gift to give to someone who either loves plants, sustainability, or food!

This is a great project if you either have your own tomato plant, or is lucky enough to get a fully home grown tomato so you can start your own plant.

Let's get started!