Growing a tomato indoors

Hi guys, just wanted to share progress photos of my tomato. This was planted from the seed of a grocery bought tomato.

It is about 4 months old. I'm not sure how tall, but probably around 7ft.

This is the second time it has flowered but I didn't know what I was doing the first time so no fruit was produced.

Now that I know what to do fruit has been growing amazingly for the past week.