I highly recommend Adobe Lightroom for all your post processing needs. Another alternative to Lightroom is Aperture. Aperture is similar to Lightroom with less features. Ninety percent of all wedding photographers use Lightroom. This software has been part of our studios workflow for several years.
Four different modules are included in Lightroom. The first module is perfect for organizing thousands of photos. Creating meta descriptions and keywords is a snap.
The develop tool is the next module used as part of our workflow. This is where all your color corrections are done.
If you like creating slideshows for prospects then take a look at the third module. You can even create custom HTML pages, from your portfolio of photos, for your website. The highly anticipated Lightroom 4 beta was currently released (includes many more features).
Do not expect to master all the features in Lightroom within a week. Test the software, with a 30 day trial, with hundreds of photos before making a final decision.