I want to learn Solr. May I know some good tutorial/links for it?
Also, is Solr available for .NET?
If you mean running the Solr server on .Net instead of Java, then no, there is no port. I've been trying to run it with IKVM here but it's low-priority to me so I can't put much time on it. It'd be great if someone can help out with this.
If you mean using/connecting to Solr from a .Net application, then yes, you can use SolrNet or SolrSharp for that.
I blogged about this not long ago.
UPDATE: I made significant progress with Solr + IKVM.