http://supct.law.cornell.edu/supct/
Here is SCOTUSblog link (kept by a law firm
www.goldsteinhowe.com/blog/index.cfm
You have to click HTML Links along the top of the case page. Syllabus is a summary; opinion is the court's decision and it is case law; concurring opinion is an opinion that agrees with the decision but for different reasons; dissent is dissent, where usually Thomas or Scalia thunder away.
When you read an opinion, think Issue, Rule, Application, Conclusion. The Rule(s) is the law used in application to a set of facts to guide one to one's conclusion. Lawyers: chime in!