The ground rules for the course is to go through it in any manner that suits your learning style.
In going through the worksheet I would see if I can generalise. Afterall it says to go throught them all once lightly. Not to aim to be throrough here, it is just an exploration. The whole idea is to see where you are on the map... from your point of view. Meaning there is no wrong answer anyway. Having it written out on a worksheet helps you to see what you want to release so that you can move on.
You can bypass it and come back to it later but for some reason I have found it better to "do it now" when working with home study courses as I often forget to come back to it.
The next step will be releasing on everything you wrote down on the worksheet. So make a start write it down anyway. Remember you own the course and if you discover any that got away in your inital run through you can do it again. Bit like weeding a jungle, you pull out the noticable stuff first then you work on the little weeds 
Alex
