Pages 16-30 covers Robert's decision fo the individual mandate - and it's a good one.
Upholding the mandate as a tax under congress's ability to tax, and not upholding it under the commerce clause (and basically saying the government is allowed to force citizens to buy things), is the entire crux of this issue for me.
Roberts should be praised for his prudence and pragmatism, because he was able to uphold the law to please the center left, while alleviating the fears of thinking conservatives like myself.