Guaging Yarn Weight
I've ended up making many project messes with that one and will seek to avoid doing that again, believe me! Such a waste of yarn as it is never the same once you unravel it again. It seems to lose the natural feel of the fibre though that has never really made a difference to the finished project.
I've managed to find a good weight guide here. This should allow me to be able to guage whether a pattern is good for the huge stash I have at home... and hopefully to start working through it although I sometimes spend years not even looking at the yarn I have!
Here is the simplest and probably the best form of chart, commonly available elsewhere on the internet: