Wordpress pull Blog Post - php

I'm designing a theme for wordpress. I need advice on how I would construct it.
At the bottom of my Frontpage/Home I will put a snippets (a title and a short description of blog post) of what is new in my Blog .
Preview:
Question:
What approach should I use? I can make the bottom page widget ready and will just use widget or will use PHP to pull details in my 'blog' page (I dunno how to do it php, a link would be useful)
what is the proper approach? I'm designing it for a client. My concern is If I would make it widget ready, client would have to install the widget. If I would do it on PHP, (I have no resource and idea in doing that )
Thanks!

You'll need to know some PHP and JavaScript if you want to make a WP theme from scratch. Otherwise I would suggest to modify an existing one.
Here is the theme development help from WP.

You'll have to run a loop, in which you'll retrieve the posts from the database (Wordpress handles that) and show them as needed.
The Loop In Action and
Building Custom Wordpress Themes
Hope that helps

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Wordpress Block Theme Query Data

I have been using the Twenty Twenty-Two theme in Wordpress that is running on AWS lightsail multisite WP environment. I have found it easy enough to layout content using block editor.
Now I want to query data from the database (for now just want to use the Wordpress database where I added a table) and display that information.
I see tutorials for older versions of WP but I can not find any resource that provide much guidance on this. What I know thus far is I can not simply add php code to a page or post.
Please help. Frustrated at this point. Seems like this would be common task.
The question of "[how to] simply add php code to a page or post [in WordPress]" is not easy to answer because there are multiple ways you might approach it.
I recommend you search for phrases like
"add php WordPress functions.php"
"Why Child Theme custom php WordPress"
"how-to simple WordPress plugin custom php"
Good luck!

Can I use HTML based theme in wordpress

I've been trying to create different themes in wordpress but it seems difficult to me as it requires some core functions of Php which I am unable to understand. Now I want to ask the question in details whether we can convert HTML theme to wordpress theme? I know that every theme is made in HTML but what If I make a theme in HTML/CSS or even bootstrap. How to integrate it with wordpress Posts and Pages thing? How can I tell wordpress that when a user adds a post through wordpress, it should go here or wherever? I think the question is vague but I myself is confused. Please do let me know if you understood! Thanks
You will need a combination of PHP, HTML, and CSS (at the least) to create a WordPress theme. Luckily, the PHP requried for a basic theme is pretty simple. I'd like to refer you to: https://www.siteground.com/tutorials/wordpress/wordpress_create_theme.htm . It gives a basic overview on theme development where the PHP isn't too involved.

Wordpress - creating custom pages with php code

I need to add few additional pages to my wordpress site.
These pages should not be "part of the site", ie they should not be linked somewhere from the posts and so on.
However, they should have the same header/footer as the rest of the site ( I am using custom theme ). And they should be accessible via url.
The final requirement is, I should be able to code in php.
At the moment, I tried to create a new "Page" in my admin console. And then write some php-code inside. However, all my php code gets commented and since not executed.
I don't think that installing plugins such as Exec-PHP is a good idea, so I am trying to find other solutions.
Any comments/advice/suggestions how to make it?
I would be grateful if you give me some how-to link.
Thank you in advance.
You can use a custom page template in your theme for this and just keep the site empty in the admin panel:
http://codex.wordpress.org/Theme_Development#Custom_Page_Templates
By using Template tag's you can create custom page.
write this code on the top of your php file....
/*
Template Name: Your Template Name
*/

Wordpress Styling

I am new to using Wordpress as a developer as opposed to just using the dashbord but am struggling to understand a few things and would really appreciate some help.
For a site that does not require a blog - do you just create custom/specific page templates for each page that your site requires?
If so - presumably you code the content directly. But then how does the client edit their website's about page or any other page for example - because doing it through the dashboard isn't going to use the necessary CSS hooks without using classes, id's and HTML?
As a beginner to Wordpress - I can't see that posts are used on sites that don't have a blog, but am I correct or is using posts the way a client can edit content on their site, but just have posts styled to look like normal content?
Or am I wrong in thinking a company (I am starting as an intern at a web dev company that use WordPress) provides the tools or at least configures WordPress to enable the client to change content?
Any help getting me to understand the basic concept and way a developer would create a custom WordPress site would be much appreciated. Thanks in advance.
You can use page.php. In WordPress everyone create at least one custom template type to get wider design for custom pages.
You can refer here for more info.
Use Advanced Custom Fields with page templates. Say you are making an About page, call that template about and select that template in the backend editor. Once you save the page, the acf fields will show up and you can populate the content.
ACF: https://www.advancedcustomfields.com/
Page Templates: https://developer.wordpress.org/themes/template-files-section/page-template-files/page-templates/

Get Wordpress sidebar from another Wordpress blog?

I want to write a plugin that will pull a sidebar from one Wordpress blog and place it in the sidebar of another blog. I know to write a plugin, but actually don't know where to start with this idea.
I believe he's saying that he wants to write a plugin to be able to retrieve a sidebar from another website and display it (possibly as a widget?). If that is not the question then I apologize; otherwise, I'll take a shot at answering.
The first thing I would recommend would be to view the code of just about any other widget plugin to make sure that a plugin (and not just some JavaScript) is really what you want.
Assuming you want the plugin, check out this resource for some basics. Also, you'll need the retrieval code which will either be "screen-scraping" in PHP or AJAX partial page loading with JavaScript.
I hope any or all of this helps you get where you're going.

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