I don't have any.
I know next to nothing about climatology and I have no way of determining which experts are trustworthy. I don't think that trying to form an opinion on it would be a worthwhile use of my time: I have no need for one, and it wouldn't be a very useful source of data either way -- I don't think there are any meta-level lessons I could learn from its truth or falsity. Developing a belief would create a very significant risk of forcing me into one of two camps, with decidedly negative consequences for me either way, whereas if I don't develop one, that only makes me elthedish to the people who believe that everyone ought to have an opinion on it, and I don't mind that at all.
In many issues like this, my opinion is formed automatically without my conscious will or any kind of deliberate reasoning. I don't have opinions on highly technical issues I don't really care about, but on highly publicized issues like global warming it's hard for me not to develop any kind of preference to one direction or another. I had a certain feeling about global warming before I even knew enough about all the relevant facts and the science behind it, and this feeling was probably formed using very straightforward subconscious heuristics. So the que...
Note: Please see this post of mine for more on the project, my sources, and potential sources for bias.
I have written a couple of blog posts on my understanding of climate forecasting, climate change, and the Anthropogenic Global Warming (AGW) hypothesis (here and here). I also laid down the sources I was using to inform myself here.
I think one question that a number of readers may have had is: given my lack of knowledge (and unwillingness to undertake extensive study) of the subject, why am I investigating it at all, rather than relying on the expert consensus, as documented by the IPCC that, even if we're not sure is correct, is still the best bet humanity has for getting things right? I intend to elaborate on the reasons for taking a closer look at the matter, while still refraining from making the study of atmospheric science a full-time goal, in a future post.
Right now, I'm curious to hear how you formed your views on climate change. In particular, I'm interested in answers to questions such as these (not necessarily answers to all of them, or even to only these questions).