Oxygen Mini Tutorial
There are two parts to changing styles in oxygen.
The first part is the primary section, the options that are available will change depending on the element that is selected.
The second part is the advanced section, which has the same options no matter what elements are selected at that point in time.
At this point, I will not be explaining the effect of each of these options. Instead, I would encourage you to try out on your own to see what the effects are.
If there are any options which seem confusing, you can search it up online with the following search terms.
(style name) + "css reference"
(E.g. margin, padding CSS reference)