New to scss – How to start

Hey

I installed scss 1.2.4

Folder structure seems to be in order
library
/css
/scss

and now what?

Basically what I want is to add this scss to my tables and I am lost in SASS Compass and I dont know what documentation.

/********************************/
/*********** Tables *************/
/********************************/

/* Responsive Tables - Block  */
/*
table, thead, tbody, tfoot, tr, td, th, caption {
  display: block;
}
*/

@import "compass/css3";

@import "compass/css3";
@import url(https://fonts.googleapis.com/css?family=Patua+One|Open+Sans);

* { 
  -moz-box-sizing: border-box; 
  -webkit-box-sizing: border-box; 
    box-sizing: border-box; 
}

table.size-chart {
  border-collapse: separate;
  border-bottom: 2px solid #00cccc;
  background: inherit;
  @include border-radius(5px);
  margin:50px auto;
  @include box-shadow(0px 0px 5px rgba(0,0,0,0.3));
    box-shadow: 0px 0px 20px rgba(0,0,0,0.10),
     0px 10px 20px rgba(0,0,0,0.05),
     0px 20px 20px rgba(0,0,0,0.05),
     0px 30px 20px rgba(0,0,0,0.05);
}

thead.size-chart {
  @include border-radius(5px);
}

thead.size-chart th.size-chart {
  font-family: 'Patua One', cursive;
  font-size:16px;
  font-weight:400;
  color:#fff !important;
  @include text-shadow(1px 1px 0px rgba(0,0,0,0.5));
  text-align:left;
  padding:20px;
  @include background-image(linear-gradient(#646f7f, #4a5564));
  border-top:1px solid #858d99;
  
  &:first-child {
   @include border-top-left-radius(5px); 
  }

  &:last-child {
    @include border-top-right-radius(5px); 
  }
}

tbody.size-chart tr.size-chart td.size-chart {
  font-family: 'Open Sans', sans-serif;
  font-weight:400;
  color:#5f6062;
  font-size:12px;
  padding:20px 20px 20px 20px;
  border-bottom:1px solid #e0e0e0;
  
}

tbody.size-chart tr.size-chart:nth-child(2n) {
  background:#f0f3f5;
}

tbody.size-chart tr.size-chart:last-child td.size-chart {
  border-bottom:none;
  &:first-child {
    @include border-bottom-left-radius(5px);
  }
  &:last-child {
    @include border-bottom-right-radius(5px);
  }
}

tbody.size-chart:hover > tr td {
  @include opacity(0.5);
  
  /* uncomment for blur effect */
  /*color:transparent;
  @include text-shadow(0px 0px 2px rgba(0,0,0,0.8));
}
*/
	
tbody:hover > tr:hover td {
  @include text-shadow(none);
  color:#2d2d2d;
  @include opacity(1.0);
}

Please help