It may not be so bad. Some times you can get lucky and just delete the right sketch line or relation and you're good. Have you tried this method before? 3 steps right click in the field, go to dialogue box, go to pull down menu and go through each section and see if it helps you identify it.
When you get your error saying that your sketch has 'over-defined', I would suggest trying to use the SketchXpert Function to see if this can help you at all.
If you click on over defined from the Status Bar, this will launch SketchXpert
From within here, you can click 'Diagnose' where SolidWorks will try to work out which dimensions or relations need to be removed to "fix" the sketch. It will often come up with multiple solutions and the first one is not always correct, so do cycle through them to find the most appropriate one for you.
Hope this helps you speed things up and get your head round it a bit more.
Daniel R. Melendez wrote:
Holy smokes batman, I didn't know that existed. I've picked the over defined dealio in the past and got nothing just to see if it would do something. When did this come out?
That is way cool!
I know it's been around as far back as 2012 which was the first year I used Solidworks.