Thanks to all who replied, you guys are fantastic! its nice knowing there is a whole Sketchup community out there! look forward to participating further and will let you know how I go in terms of solving the problem!!

I am a beginner to Sketchup and I am currently learning how to make windows, however, you need to select the edges of a square once you've deleted the face in order to make the window. But I can't manage to select just the edges of that window and not everything else. Have tried shift+clicking but it doesn't seem to work, nor does zooming right in. I think its more difficult to select the horizontal lines rather than the vertical.
Can anyone save me from these early time wasting troubles??