Theme development

I am using Drupal 8.x and the Bootstrap theme. I want to create a custom homepage that doesn't have the usual sidebar/content/sidebar arrangement. I also don't want to get involved in coding, but through views, or some module. (I've tried Pages, Panels, Panelizer and DisplaySuite, but they are either too complicated or do not address the homepage.)

What are my options?

Sorry for my English.

I installed the commerce module , I can to buy a product with an expiration date of one year.
I would like with Rules ( or other method ) send an email to people who have purchased a product and that the product will end in one month .

Can help me, I'm a bit lost with Rules .

Thanks again.

A theme is a collection of files that define the presentation layer. You can also create one or more "sub-themes" or variations on a theme. Only the .info.yml file is required, but most themes and sub-themes will use other files as well. This page lists the files and folders that are found in a typical theme or sub-theme.
Location of themes
You must place themes in the "themes" folder of your Drupal installation. Note that Drupal core themes such as Bartik and Seven are located in the core/themes folder of your installation.

I recently installed Drupal 8.1.7. I just installed the zurb foundation v6 theme module.

I'm about to create a subtheme. In Drupal it's a slightly different process than I'm used to. I usually start with a generic, barebones upstream theme, and build 'up'.

The README describes both the 'auto' install

drush fst myname

and a 'manual' process.

Hello!
I have a question that I would like to fix. On the page category with description text is displayed above the products , I would like to put it below the goods. How can I do that? I tried to understand it myself, but could not find where to change the position of text on a page.
Screenshots of the page and the code :
http://joxi.ru/KAxo9o3c4OdkO2
http://joxi.ru/MAjologcv9n5Vr

hi everyone,

how can i preprocess a field to get his raw value before twig debug include the debug comment in the content ?
For example i have a list field with letters (A B C D E F or G), for each letter i use a different classe to style differently so in my twig template i naturally tried this :

<span class="note note_energ{{ fields.field_classe_energetique.content }}">{{ fields.field_classe_energetique.content }}</span>

But it also output the twig debug and i get this :