I hope you are well today and thank you for your questions.
How do we make articles or blog posts show up under trending or hot topics on the front page?
To achieve this you have to use Blog Posts Fancy visual composer element in that page as shown in the attached screenshot.
Also, for the main tile, we want to change that into a a live bitcoin chart.
You have to develop custom code to achieve this.
Developing custom code for custom functionality is beyond the scope of support that we provide here.
If you are not a developer then you can consider hiring a developer to develop it for you. You can hire a developer from any freelance site. Shufflehound recommends the developer https://www.upwork.com/freelancers/~011652ffec8865c6d5
You can find it as described on the following pages.