.NET
Install Ubuntu Desktop 20.04 LTS
Try to install Ubuntu Desktop 20.04 LTS. Parallels Desktop provide ubuntu install assistant that is useful, so I use it.
IHtmlHelper.BeginForm on .NET Core v3
When creating web forms in ASP.NET MVC, using the HtmlHelper class in the namespace System.Web.Mvc. In the ASP.NET Core MVC provide IHtmlHelper in Microsoft.AspNetCore.Mvc.Rendering namespaces. So, it describe the IHtmlHelper.BeginForm.
Shift-JIS on .NET Core v3
Respect for Shift-JIS.
Use the Unity Hub via command line
Since Unity Hub v2.1.0, it's provided command line interface. So, let's enjoy to use it.
How to install NuGet packages in Unity
Unity is a very strange tool from .NET user's view. It's for Unity doesn't provide the NuGet package manager as a first-party tool. Unity users should work with a third-party NuGet package manager. So, if you need it setup to your unity project.