New Homeowner. Yay!?? Who do I sue? Is it worth it?

I purchased my home in October 2012. Spent one week cleaning and painting. Moved items into basement until I could sort through. Paid for a home inspection prior to purchasing. First week I notice dining room light did not work, changed light bulb. Still did not work. Pipes in baement backed up 8 days after purchasing. Fecal matter all over personal items. Had to replace the pipes in yard. Dug up yard and part of asphalted driveway. No grass giant mud pit. Trees roots grew through terra cotta piping. Playroom upstairs off of living room leaking in corner. Lift up carpet raw wet wood underneath. Disclosure stated they had leaking problem but they fixed in playroom Remodled ktichen. Electrician fixed dining room light. Few weeks later outlet in dining room, hallway light downstairs and upstairs, porchlight and ceiling heater in playroom no longer work. Disclosure also stated NO known electrical issues. Can I sue inspector and previous owners? Is it worth it? Whats the 1st step?