On this site
From this page you can find lists of the videos on this site keyed to chapters of widely used textbooks.
On the web
Choose to Study Russian for Professional Needs is "a collection of curated authentic materials (interviews) that address different professional spheres. Approaches to the interviews are based on ACTFL proficiency benchmarks and address a range of topics, from biographical stories and professional interests to reflections on contemporary topics in science and technology." Highly recommended for intermediate and advanced learners! The project was developed by Svetlana Abramova (University of Washington), Veronika Egorova (Harvard University), and Maria Khotimsky (Massachusetts Institute of Technology).
Tatiana Klimova's Russian Podcast site features podcasts, audio lessons, and videos about Russian culture, interviews, and more.
Olga Jarrell's Amazing Russian channel on Youtube features explanations of grammar points and conversational expressions in slow, clear Russian.
Angelos Georgakis' Explore Russian channel is fun and creative, exploring the language through film clips and spontaneous interviews on the street.
Между нами is a free, web-based textbook that provides a comprehensive introduction to Russian language and culture.
The Russificate Blog has something for everyone: slang and idioms, grammar tidbits and quizzes, songs and poetry.
Books
Nicholas Brown's New Penguin Russian Course is indeed "both accessible and indispensable" for beginning and intermediate learners. And it's inexpensive!