[rst/en] Updating rules for list / sublist creation (#3517)

[rst/en] Updating rules for list / sublist creation

rst.html.markdown

@@ -49,18 +49,26 @@ Subtitles with dashes
 
 You can put text in *italic* or in **bold**, you can "mark" text as code with double backquote ``print()``.
 
-Lists are as simple as in Markdown:
+Lists are similar to Markdown, but a little more involved.
+
+Remember to line up list symbols (like - or *) with the left edge of the previous text block, and remember to use blank lines to separate new lists from parent lists:    
 
 - First item
 - Second item
+
   - Sub item
     
+- Third item
+
 or
 
 * First item
 * Second item
+    
   * Sub item
 
+* Third item
+
 Tables are really easy to write:
 
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