There are many, many other free sources if you were to google something like, foods to avoid with gout.
Basically, food intolerances affect different people differently and not everyone has the same intolerances, so my issues most likely aren't yours. Also, an intolerance is not an allergy, you can have a little of the foods you're intolerant to, but when you go over the line symptoms will appear. The best way to deal with this is with an elimination diet, about which :
When I was diagnosed with gout, I took Allipurinol every day for two years and ate what I wanted. The turning point for me was when I asked my doctor if he could assure me that taking it for 30 years would not eventually cause serious side effect health issues. He said he could not. So, when I changed my diet, accordingly, I also noticed no more athlete's foot or itching in other unseen places.
The other thing worth mentioning, I think, is that gout is officially known as gouty arthritis, so if you're diet is structured to avoid gout symptoms, it's a short leap to it working on other forms of arthritis with some tweaking.