Good SEO practice is to limit one H1 tag per page/post. In WordPress, By default WordPress, page/post will be given H1 tag

1. Publish at least 1 blog post per week. Think in the mindset of the user, They mostly search for solutions. Focus on providing value to the users.
2. Build Natural Backlinks

Yes! May be hit by any new update. Don't worry. If you write content based on user intention and build natural backlinks, You need not bother about these updates

It is better to go with option A. Option B takes lot of time to setup. But it is worth to spend time on second. Gradually, Google will consider the canonical URL to index

Search Engines always demands different titles for different pages. So try giving different titles. Your error will be resolved

Dear Shane, The first structure is good. Don't overoptimize.

Have you checked site:yourdomain.com. Usually, Blogspot will be indexed within one week. If your site does not appear with the site:yourdomain.com, Then you have to submit manually in google search console. This will surely help!

Hi Paramesh,

It is important to have a keyword in the Title tag. But it should be compelling and trigger users to click on it. Also, Location does not have any significance here. As you mentioned it as an online course. They will look only for the benefits you are going to offer

For Example: Ethical Hacking and Cybersecurity courses online| Master in x Weeks