If you produce mostly videos in your regular blog post without adding sufficient text, it will hardly index in search, try to add available article for unique information as recorded in the original video. No doubt it will take time to write great article to the subject but it would greatly benefit you in terms of SEO and user perspective too, if you’ve done both. There is another aspect considering to this approach, each piece of your work should get reasonable view and make content available for those who have difficulties to watch video due to some reason, at least they can access the content from the article.
If you find difficulty to add content try out to watch the video couple of time, even it has no speech, you can get an idea what text you should provide to your readers. If you’re adding a video that has presentation and speech, you can use a speech synthesis systems or even if you concentrate on listening the recorded words and phrases, you can write a good article in your own word closely matching to the spoken words and following the accent of the original recordings.
Each post you write, give them a good title atleast one keywords therein that can grab attention of people and users can find your content using specific keywords, if there is scope, use effective keywords’ into your post title- matching to the content. Also for greater leverage, optimize your categories sections well, don’t push a post into uncategorized default section, each post should be identified with specific keyword of the category. It would be good if you change your permalink of blogs using Custom structure: { /%category%/%postname% } that will help you to optimize your url and allow you to show the category and post name into the URL.
I tried to change the permalink of my this blog but possibly wordpress.com don’t allow this to do, the customization is off because I am still on their free service. 
There are no courses to take, but much to learn from experience..
