diff --git a/personal/obsidian.md b/personal/obsidian.md
index 2dc9dab..822dc1b 100644
--- a/personal/obsidian.md
+++ b/personal/obsidian.md
@@ -11,6 +11,7 @@ Define the primary themes or categories that broadly encapsulate your notes. The
 - `#projects`
 - `#learning`
 - `#hobbies`
+- `#reference` (for capturing general reference information)
 
 ### Step 2: Create Sub-tags
 
@@ -44,6 +45,10 @@ Break down each main category into more specific sub-tags to further organize yo
   - `#hobbies/travel`
   - `#hobbies/photography`
   - `#hobbies/cooking`
+- `#reference`
+  - `#reference/websites`
+  - `#reference/documents`
+  - `#reference/tutorials`
 
 ### Step 3: Use Descriptive Tags
 
@@ -95,15 +100,24 @@ Create a hierarchical structure with nested tags to establish relationships and
 
 ### Step 6: Consistent Naming Conventions
 
-Maintain consistency in naming tags. Use all lowercase letters, hyphens, or underscores to separate words in a tag. This approach ensures uniformity and prevents errors. Examples include:
+Maintain consistency in naming tags. Use all lowercase letters, hyphens, or underscores to separate words in a tag. Numbers can also be used in tag names to denote sequences or dates. Examples include:
 
 - Use `#work/tasks` instead of `#Work/Tasks`
 - Use `#personal_goals` instead of `#Personal Goals`
+- Use `#project/001` or `#idea/2023/05/22`
 
 ### Step 7: Regular Review and Refinement
 
 Regularly review and refine your tag system to ensure it remains effective as your knowledge base grows. Merge similar tags, remove unused ones, and adjust your hierarchy as needed.
 
+### Step 8: Combine Tags with Obsidian Features
+
+Utilize Obsidian's powerful features like links, backlinks, and queries in combination with your tags to enhance organization and navigation. For example:
+
+- Use `[[Note Title]]` to create links between notes.
+- Use backlinks to see all notes that link to a particular note.
+- Use queries to create dynamic views of notes based on tags or other criteria.
+
 ### Example of a Tagged Note
 
 Here’s a practical example of how you might tag a note:
@@ -131,6 +145,7 @@ Here’s a summary list of starting point tags for easy reference:
 - `#projects`
 - `#learning`
 - `#hobbies`
+- `#reference`
 
 #### Sub-tags
 - `#personal`
@@ -161,6 +176,10 @@ Here’s a summary list of starting point tags for easy reference:
   - `#hobbies/travel`
   - `#hobbies/photography`
   - `#hobbies/cooking`
+- `#reference`
+  - `#reference/websites`
+  - `#reference/documents`
+  - `#reference/tutorials`
 
 #### Descriptive Tags
 - `#productivity`