ASP.NET vs ASP.NET Core

As a medium level .Net programmer trying to implementing a website, I decided to go through the Asp.Net Core. I found some tutorials on the web and started learning; however, I faced a problem. Even though I have been working with .Net and C# (mostly with unity game engine, which led to a quite amazing mobile game, published on a Persian app store) for two years or even more, by start learning Asp.Net Core, I found out that I do not know .Net as much as I expected. There were some things I should have learned before.

I searched for other frameworks, and Django was a popular one. Besides, I have planned to learn Python for machine learning. The website I want to make (with a small team) is nearly similar to Khan Academy. (We are going to use React for front-end)

So, What should I do? Continue working on .Net core with its amazing new features, or start getting into the Python and Django?

Your advice accompanied by reasons will be greatly appreciated!

I have a mission to make a web application for my organization (engineering consultant). With the following bullet points that the new web app has to cover, what is the right tool?

1. It should be able to display employee data and project data. For example, when searching the name of Mr. Peter Parker, I should be able to click on the name to see his personal profile and also a list of construction projects he is or was a part of. Also, if I click on a project name, say Project ABC building, it should show me the detail of this project (who is the client, who works on this project, where, start-finish dates, etc.)

2. It should be able to sync with the database from Microsoft Access.

(optional) 3. The user of this web app should be able to propose a rotation of role (Ex. Boss might want Mr. Peter Paker to work in another project next month, he can just drag Peter into XYZ Building.)

When I started on this project as the sole developer, I was new to web development and I was looking at all of the web frameworks available for the job. I had some experience with Ruby on Rails and I had looked into .net for a bit, but when I found Laravel, it felt like the best framework for me to get the product to market. What made me choose Laravel was the easy to read documentation and active community. Rails had great documentation, but lacked some features built in that I wanted out of the box, while .net had a ton of video documentation tutorials, but nothing as straightforward as Laravels. So far, I am happy with the decision I made, and looking forward to the website release!