Coaxial cable wiring resources & Question

You've got knowledge.  You've got this.  You know about splitting.

Splitting is just a method to distribute something:  water, electricity, gas, data.  For example, if you had 1 bathroom on the east side of your house and 1 on the west, you'd install 2 pipes at the primary feed to distribute water to each bathroom.  If you had 2 bathrooms on the east side, you could still install 1 east-side pipe at the primary and just split the water farther within the east side of your house.

It's the same with coaxial.  The cable company connected your house at only 1 point.  This 1 point is called your Primary Feed.  If your Dad wanted to split the signal for an east and west bedroom, he would have installed an eastward and westward cable segment.  Again, if there were 2 east-side bedrooms, he could have just split the eastward signal farther within the east side of your house.

However, these remote connections (bedrooms) aren't of concern right now.  Your only concern is at the Primary Feed.  If there is a wall plate at the Primary Feed, remove it and check for splitters (east and west).  Disconnect them.  You only want the 1 cable laying on the carpet in your Living Room, for example, to be connected to 1 connection of the cable company.  You want as much as that juicy signal as you can get without splitting.