Solved Namespaces can't be found (missing References)

I recently wanted to start developing plugins for oxide and was wondering if there are any tutorials for a basic plugin and setup just to see how everything works (I did try searching, but I found it difficult to know what to search for, everything I found would be about setting up rust oxide servers not a development environment). I'm not very familiar with csharp or visual studios and couldn't figure out how to.

• Add libraries such as the ones used in Oxide/Rust
• Suggest methods and variables of objects (Which probably has to do with the fact I haven't imported any libraries)
• Compile. I tried using csc on a basic cs file, but it was complaining about a lack of files.

The errors in the case it's not due to missing libraries

Code:

Microsoft (R) Visual C# Compiler version 1.1.0.51204
Copyright (C) Microsoft Corporation. All rights reserved.TestPlugin.cs(5,13): error CS0234: The type or namespace name 'Core' does not exist in the namespace 'Oxide' (are you missing an assembly reference?)
TestPlugin.cs(6,13): error CS0234: The type or namespace name 'Core' does not exist in the namespace 'Oxide' (are you missing an assembly reference?)
TestPlugin.cs(7,13): error CS0234: The type or namespace name 'Core' does not exist in the namespace 'Oxide' (are you missing an assembly reference?)
TestPlugin.cs(14,31): error CS0246: The type or namespace name 'RustPlugin' could not be found (are you missing a using directive or an assembly reference?)
TestPlugin.cs(12,6): error CS0246: The type or namespace name 'Info' could not be found (are you missing a using directive or an assembly reference?)
TestPlugin.cs(12,48): error CS0246: The type or namespace name 'ResourceId' could not be found (are you missing a using directive or an assembly reference?)
TestPlugin.cs(13,6): error CS0592: Attribute 'AssemblyDescription' is not valid on this declaration type. It is only valid on 'assembly' declarations.
TestPlugin.cs(16,28): error CS0246: The type or namespace name 'BaseProjectile' could not be found (are you missing a using directive or an assembly reference?)
TestPlugin.cs(16,59): error CS0246: The type or namespace name 'BasePlayer' could not be found (are you missing a using directive or an assembly reference?)
TestPlugin.cs(16,78): error CS0246: The type or namespace name 'ItemModProjectile' could not be found (are you missing a using directive or an assembly reference?)
TestPlugin.cs(16,108): error CS0246: The type or namespace name 'ProtoBuf' could not be found (are you missing a using directive or an assembly reference?)
TestPlugin.cs(21,32): error CS0246: The type or namespace name 'BaseProjectile' could not be found (are you missing a using directive or an assembly reference?)
TestPlugin.cs(21,63): error CS0246: The type or namespace name 'BasePlayer' could not be found (are you missing a using directive or an assembly reference?)
TestPlugin.cs(21,82): error CS0246: The type or namespace name 'ItemModProjectile' could not be found (are you missing a using directive or an assembly reference?)
TestPlugin.cs(21,112): error CS0246: The type or namespace name 'ProtoBuf' could not be found (are you missing a using directive or an assembly reference?)C:\Users\derek\Desktop\Rust Server\steamapps\common\rust_dedicated\RustDedicated_Data\Plugins>

Any help would be greatly appreciated.

 

I see that the references are added for the server compiler at the top of the file like this.

Code:

// Reference: Oxide.Ext.Rust
// Reference: Newtonsoft.Json

I also found that in Visual Studios if you go to Project -> Add Reference... you can add a reference there, but I'm unable to figure out where to obtain the references to add.