Update README

Author: tpeczek

README.md

@@ -51,6 +51,13 @@ There are several demo projects available:
 - [Web Push Notifications in ASP.NET Core-powered Angular Application](https://github.com/tpeczek/Demo.AspNetCore.Angular.PushNotifications)
 - [Web Push Notifications in Azure Functions](https://github.com/tpeczek/Demo.Azure.Funtions.PushNotifications)
 
+## Consulting and Professional Services
+
+Do you need help with any of my libraries, or with building features on top of what they provide? What about ASP.NET Core architecture, Azure architecture, or DevOps? I offer consulting and development services.
+
+[![Book an Appointment](https://img.shields.io/badge/%20-Book%20an%20Appointment-%23006BFF?logo=calendly&logoColor=white&style=for-the-badge)](https://calendly.com/tpeczek/30min)
+[![Send an Email](https://img.shields.io/badge/%20-Send%20an%20email-%23EA4335?logo=gmail&logoColor=white&style=for-the-badge)](mailto:tpeczek@gmail.com)
+
 ## Donating
 
 My blog and open source projects are result of my passion for software development, but they require a fair amount of my personal time. If you got value from any of the content I create, then I would appreciate your support by [sponsoring me](https://github.com/sponsors/tpeczek) (either monthly or one-time).
@@ -59,4 +66,4 @@ My blog and open source projects are result of my passion for software developme
 
 Copyright © 2018 - 2025 Tomasz Pęczek
 
-Licensed under the [MIT License](https://github.com/tpeczek/Lib.Net.Http.WebPush/blob/master/LICENSE.md)
+Licensed under the [MIT License](https://github.com/tpeczek/Lib.Net.Http.WebPush/blob/master/LICENSE.md)