Drupal 8.x

Hi,
I have created a custom view with exposed filters in it, but instead of a multiple select field, I'd like to use checkboxes. I found this article to implement it in other Drupal versions, how can we do this in Drupal 8?

Coming from Laravel's Eloquent, I am finding the Drupal 8 query builder to be quite cumbersome and awkward.

Consider the following query, which simply pulls in the user's UID, login name, email address, and real name:

Hi,
I want to convert this template
http://paigniotherapeia.com/ in the latest drupal version.
The reason i will do this, is to add the ability of closing appointment
online with the doctor and pay via creditcard or paypal.
Can you suggest me any good drupal plugin for this purpose?
I need to keep the website fast so please make suggestions that
will offer stability and remain speed at good levels.

I created gallery node type containing image field with unlimited number of images. I have set image styles, but they are not correctly applied, see https://www.drupal.org/files/issues/colorbox_thumbnails.png It is same if I use basic image styles or Colorbox module. I tried to flush image styles and even create thumbnails manually, but they still do keep wrong differing sizes. This is very weird. Any idea how to solve it?

I have a functioning Drupal 8.1.1 site on my Windows 10, created using Acquia Dev Desktop 2.
I installed the Version: 8.x-0.1 of Entity. I was unable to enable it, then noticed that it says:
Requires: System (<8.1.0) (incompatible with version 8.1.1)

I tried to install a new version of Entity, and got an error message that Entity is already installed.

I clicked on the Uninstall tab to uninstall it, but Entity doesn't show up in the Uninstall tab.

What are the steps I need to follow to uninstall Entity ?

Hello, I am using Drupal8

1. How can I get page content programmatically?
Lets say in my module to get content in this way
$node_content = \Drupal\method::load($node_id);

2. How can I get a list of published node ids programmatically?