All the content on your pages helps you rank. SEO-tuned blog content. Title tags, image alt-tags, and internal links between relevant material.
Google still searches for keywords on your site to match the search queries it runs. From its white paper on "How Search Works":
Related: How many types of SEO?
A webpage that contains the same keywords you are searching for is the most obvious sign that it is relevant. The information is more likely relevant if the keywords appear on the page or in the headings and body of the text. We use anonymized and aggregated interaction data to determine whether search results are relevant for queries. This data is transformed into signals to aid our machine-learning systems in estimating relevance.
Here you get the free backlink blogs, profile, and Forum list.