Hello there,

1- You can find our documentation at:

https://satine.elated-themes.com/documentation/

2- As for the slide button, please note that you can go alter that slide >> double click on Button shotcode >> copy entire code from text layer. Then go to create a new test page >> switch to Classic  mode  >> paste previously copied shortcode >> and then back to Backend mode. In this way you will be able to set desired options within Elated Button settings. (see images below)

3- In order to change the font of the slider navigation icons you can add the following code:

.tparrows.tp-leftarrow:before {
    font-family: fontawesome !important;
    content: '\f053' !important;
}

Simply change the content to the code of the icon you'd prefer to use and leftarrow to rightarrow in order to change that one as well.

To use this code please add it into Appearance > Customize > Additional CSS or Elated Options > General > Custom CSS.

Hope this helps and if there is anything else that we can assist you with please don't hesitate to ask.

Kind regards,
Sean