Theme development

Hello, I am totally new to Drupal and have a couple of questions:

1) Should I be installing Drupal 8 or Drupal 9?

2) If I install Drupal 9 (assuming I'm going with 9 since it is the latest version), should I install Bootstrap 3 or Bootstrap 4?

3) What are some of the best free themes for Drupal 9? I've searched on the web but everything seems to refer to Drupal 7 or 8..

Thank you!!

Hello everybody .

I have a content type motorcycles . In that a Term reference field  for the brand  of the motorcycle .

I have a made a page view ( exposed form in block )  to search for a particular brand of a motorcycle . In FILTER CRITERIA i have an exposed filters using simple hierarchical select ( content:has taxonomy terms ( with depth ;simple hierarchical select (exposed ) .So that works fine , a dropdown menu shows with the vocabulary terms of the brands and types .

Hi guys,

I try to retrieve NOT the id but the content of my taxonomy but I can't find how to access the content. I only get the 'target.id' in my unformatted view.

However, in my view I retrieve a type of content where the taxonomy exists.

In my view :

I have a Drupal 8 template file with the following markup.

<div class="col-4 col-sm-4 col-md-4 col-lg-4 col-xl-4 p-0 text-center">
  <i class="far fa-heart fa-lg"></i> {{ product.flag_like_product }}
</div>

Is it possible to exclude the following markup?

I have created 2 accordion menu for Bootstrap.

But it doesn't work properly.

I want when I open an accordion menu, it will close the other accordion menus.

How to do this ?

Le menu `accordionSetting` doit ouvrir un accordéon à la fois dans ce même menu.

Can anyone provide direction on Drupal's ability to manage a single site with thousands of users who create a profile and upload artwork for other users to see?

Thanks for any help anyone can provide.

Mark