Access Term Store Programmatically

To get the term store or term set or term, you need to get the TaxonomySession first.  You also need to reference Microsoft.SharePoint.Taxonomy namespace

using (SPSite site = new SPSite (""))

{

   TaxonomySession taxonomySession = new TaxonomySession(Site);

   //get the default one

   TermStore termStore = taxonomySession.DefaultSiteCollectionTermStore;

   /* or you can get the one you want by looping through all the term stores

     taxonomySession.TermStores

   */

   Group group = termStore.Groups["groupName"];

   TermSet termSet = group.TermSets["TermSetName"];

   //you can further looping through all the terms in the term set

   TermCollection terms = termSet.Terms

   Term term = terms[0];

//For the term that has multiple languages, you can get the label in the specific language by passing in the LCID.

   term.GetDefaultLabel(1033);

}