Welcome to the Q&A Forum

Dear All I have recently joined a new company Just Go Holidays - www.justgoholidays.com I have used the SEO Moz tools (yesterday) to review the site and see that I have lots of duplicate content/pages and also lots of duplicate titles all of which I am looking to deal with. Lots of the duplicate pages appear to be surrounding, additional parameters that are used on our site to refine and or track various marketing campaigns. I have therefore been into Google Webmaster Tools and defined each of these parameters. I have also built a new XML sitemap and submitted that too. It looks as is we have two versions of the site, one being at www.justgoholidays.com and the other without the www It appears that there are no redirects from the latter to the former, do I need to use 301's here or is it ok to use canonicalisation instead? Any thoughts on an action plan to try to address these issues in the right order and the right way would be very gratefully received as I am feeling a little overwhelmed at the moment. (we also use a CMS system that is not particularly friendly and I think I will have to go directly to the developers to make lots of the required changes which is sure to cost - therefore really don't want to get this wrong) All the best Matt