I would like to create an entirely new ribbon section like the "Home, Insert, Page Layout..." sections. I want to create a custom section. (Or perhaps to use the blank space on the developer section)

In the custom section I would like to add the most commonly used functions I use from the other sections.

I work on data sets all the time and do a lot of the same things over and over again. For example, I format an entire column as a number with 2 decimal places. I do this more times than I can count. I don't want to dig it out of the menus. I just want a button on the ribbon for it. Another example would be the "Auto Fit Column Width". The bold button is another example.

First of all, is this kind of thing even possible?

Second, is there some tutorials that could guide me in the right direction on how to accomplish anything like this?

Thanks