How do I get started integrating with Solr?
This is an excellent question, and the first for anyone new to Solr.
Our question in response: what language and/or framework are you using to build your site?
There are many different Solr clients in various languages, each of which serve to map some of these Solr concepts into the context of their language or framework. We have published a brief list of such clients here: https://websolr.com/guides/solr-clients
For the most part, a good client will abstract away the work of communicating with Solr's API endpoints, as well as formatting the correct XML for your requests, generating parameters for your queries, and parsing Solr's responses in turn.
So the best way to learn how to integrate your application with Solr is to find a Solr client for your language or framework of choice. You will know you've found a good one when it helps guide you through the next few steps.
If you have trouble finding such a Solr client, ask us a question here and we'll do what we can to make a suitable recommendation.