Ok. A co9uple of things. Content and presentation and strictly separated. I'd start with the presentation.
I always highly recommend using Theme-based templates, which allow for maximum NoCode editor experience (drag & drop, page template editing etc.).
Step 1 - you need to create a Theme
first since that is a pre-requisite for Theme-based templates. A training video can be found here
Step 2 - you can now create your page template (and select the Theme created in step 1). I recommend using the Default container since you can put any content type in that content container.
Step 2 - Create the content you want to expose with the content types you just created
Create a new page
Step -1 : Create a new page using the page template you created
Step -2 : Add the content to the page
Step -3: Save and Publish
Hope this helps.