다양한 위젯들
https://hevton.tistory.com/484?category=1221672
개인적인 플러터 꿀팁 모음 - https://velog.io/@sangh518/flutter-tips
하단 내비게이션 바
https://yoonjaepark.github.io/2020-01-19/flutter-bottom-navigation
아이콘 찾기
https://api.flutter.dev/flutter/material/Icons-class.html
CRUD
1. https://here4you.tistory.com/230
2. https://www.youtube.com/watch?v=t4QJoivDNqg
https://github.com/sbis04/flutterfire-samples/blob/crud-firestore/lib/screens/login_screen.dart
코딩도 하고, 디자인도 합니다. 디자인이 좀 더 좋은 건 안비밀