add dart

Author: myafka

help-and-manual.md

@@ -4,6 +4,7 @@
 * [Twilio](#twilio)
 * [DigitalOcean](#digitalocean)
 * [Codefresh](#codefresh)
+* [Dart](#dart)
 
 ## Notion
 
@@ -53,6 +54,18 @@ Tools: Jekyll, WordPress
 
 Why like it: Navigation, Section Learn by Example, diagrams (my [favorite](https://codefresh.io/docs/docs/administration/installation-security/#topology-diagram)).
 
+## Dart
+
+![](/images/dart-help.png)
+
+Link: https://dart.dev/tutorials
+
+Domen: IT & Technology
+
+Tools: Markdown
+
+Why like it: Navigation
+
 ----
 ## Template