Add sponsors access explainer

Author: SimonDarksideJ

articles/images/drawuserprimitives.png

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+---
+title: Sponsors Access
+description: Resources available exclusively to Sponsors of MonoGame.
+---
+
+At MonoGame, we are working hard to evolve the framework, to provide fresh resources, tools, samples and content to assist all consumers of the MonoGame Framework.
+
+## Requirements
+
+The minimum sponsorship level required to access the private resources is [SpriteBatch](https://monogame.net/donate/) 
+![SpriteBatch Logo](./images/spritebatch.png)
+
+## Sponsors Resources
+
+To both celebrate and reward Sponsors of MonoGame, we give you early access to the latest and greatest the team are currently working on, this includes:
+
+### Tutorials
+
+- Early access to the latest tutorial content:
+
+  - An Advanced 2D Shader tutorial - live
+  - A Mobile Deployment tutorial - incoming
+  - A Beginner 3D tutorial - incoming
+
+### Samples
+
+- Early access to new MonoGame Samples:
+
+  - The 3D Platformer sample - A migrated platformer sample from [Kenny.nl](https://www.kenney.nl/starter-kits)'s sample outfitted for MonoGame
+  - The 3D FPS sample (incoming) - A migrated FPS sample from [Kenny.nl](https://www.kenney.nl/starter-kits)'s sample outfitted for MonoGame
+
+> [!NOTE]
+> Early access is granted for several months before they become public.
+
+We are also working hard on more resources for the community.
+
+## DrawUserPrimitives exclusive content
+
+![DrawUserPrimitives Logo](./images/drawuserprimitives.png)
+
+Sponsors at DrawUserPrimitives and above also get additional resources:
+
+- The 3D Ascent demo project - An upgraded version of the old [Ship Game](https://github.com/MonoGame/MonoGame.Samples/blob/3.8.4/ShipGame/README.md) sample, modernised for today's platforms.
+
+## Accessing the Private Sponsorship site
+
+The private sponsors only documentation site can be found at the following address:
+
+### [https://sponsors.monogame.net/](https://sponsors.monogame.net/)
+
+Access is granted through your GitHub account, once your sponsorship is confirmed, we will request your GitHub account name so we can assign it to the relevant sponsorship level.
+
+## GitHub Authorisation
+
+In order to verify your identity, GitHub will request you validate the first time you access the site with the following dialog:
+
+![Sponsors site permission request](./images/sponsors_access.png)
+
+### Authorization details
+
+The Sponsors site application connects your GitHub account securely to our sponsorship system.  
+By authorizing, you allow us to:
+
+- ✅ Verify your GitHub identity (to confirm you are the correct sponsor)
+- ✅ Know which resources you can access (to match benefits to your sponsorship tier)
+- ✅ Act on your behalf (to confirm your sponsorship level, unlock exclusive content, and keep content access in sync)
+
+### Why do we need this?
+
+MonoGame needs to request permissions so we can:
+
+- Link your sponsorship to your GitHub account
+- Provide you with exclusive sponsor benefits
+- Keep your access secure and personalized
+
+### Security & Privacy
+
+- We only request the **minimum permissions** required.
+- Your data is handled according to our [Privacy Policy](https://community.monogame.net/privacy).
+- You can revoke access anytime from your [GitHub Authorized Apps](https://github.com/settings/applications).
+
+## Questions?
+
+If you have concerns regarding the sponsorship site or the content within, please contact us at [info@monogame.net].