Can't select Border edge
 

Can't select Border edge
I have been trying for several days to figure out how to select an entire border edge. After I select "edge" from my hot box and select my edge I hold (ctrl) right click to bring up the secondary hot box. This is where I double left click(to select the border edge). When I try to double click on the edge only the single edge is highlited in orange. For some reason the entire border does not highlight.

Does anyone know what I am doing wrong and can someone please suggest a solution.

have you tried the menu bar>select>select border edge tool.

Then instead ofdouble clicking on the border just click the first and last edge or the border.

Im new myself but i hope this helps.