Networking has hundreds of small concepts. How do you string them together? Labs. See lots in the CCNA Simulator product, and some free labs you can do on your gear at the CCENT and CCNA Skills blogs.
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Wendell poses a question. You answer, and ask clarifying questions. Wendell posts the answer and explanation. You inquire again as needed. Join in the practice and discussion!
Think virtual whiteboard, with Wendell drawing and talking through short topics relevant to the world of CCENT and CCNA. See them in the CCENT and CCNA Skills blogs, and in the Certskills Youtube channel.