Some Useful Resources to Create an Angular or Angular 9 Project

https://codecraft.tv/courses/angular/http/http-with-observables/

https://www.techiediaries.com/angular/angular-9-8-tutorial-by-example-rest-crud-apis-http-get-requests-with-httpclient/

https://itnext.io/choosing-the-right-file-structure-for-angular-in-2020-and-beyond-a53a71f7eb05

https://www.techiediaries.com/angular-mock-backend/

https://www.npmjs.com/package/ol

https://stackblitz.com/edit/angular-bing-maps?file=src%2Fapp%2Fapp.component.ts

https://www.tektutorialshub.com/angular/angular-routing-between-modules/

https://angular.io/guide/feature-modules

https://www.techiediaries.com/angular/angular-9-elements-web-components/

https://www.techiediaries.com/angular/styling-angular-9-8-7-example-with-bootstrap-4-navbar-tables-forms-and-cards/

https://www.djamware.com/post/5e435e84a8d0ef4300ffc5f6/angular-9-tutorial-learn-to-build-a-crud-angular-app-quickly

https://www.djamware.com/post/5e435e84a8d0ef4300ffc5f6/angular-9-tutorial-learn-to-build-a-crud-angular-app-quickly

Some Resources to Create PowerApps Custom Component

Install PowerApps Cli

https://docs.microsoft.com/en-us/powerapps/developer/data-platform/powerapps-cli

Create and build a code component:

https://carldesouza.com/creating-a-custom-component-using-the-powerapps-component-framework/

Package a code component:

https://docs.microsoft.com/en-us/powerapps/developer/component-framework/import-custom-controls

Publish to production:

https://docs.microsoft.com/en-us/powerapps/developer/component-framework/issues-and-workarounds

Add code component into portal app:

https://www.inogic.com/blog/2021/09/use-of-code-components-in-power-apps-portal/

Extra:

PCF ReactJs Implementation Samples:

https://blog.thenetw.org/2019/06/06/getting-react-and-office-ui-fabric-work-with-powerapps-component-framework/

https://blog.dynamicscode.net/2019/06/26/react-extended-boundary-of-powerapps-component-framework/