diff --git a/README.md b/README.md
index 69b2c3e..b60a541 100644
--- a/README.md
+++ b/README.md
@@ -84,28 +84,68 @@ False
 datetime.datetime(2022, 1, 18, 12, 52, 49)
 ```
 
-#### Availability API
+#### CDX API aka CDXServerAPI
 
 ```python
->>> from waybackpy import WaybackMachineAvailabilityAPI
->>>
+>>> from waybackpy import WaybackMachineCDXServerAPI
 >>> url = "https://google.com"
->>> user_agent = "Mozilla/5.0 (Windows NT 5.1; rv:40.0) Gecko/20100101 Firefox/40.0"
->>>
->>> availability_api = WaybackMachineAvailabilityAPI(url, user_agent)
->>>
->>> availability_api.oldest()
-https://web.archive.org/web/19981111184551/http://google.com:80/
->>>
->>> availability_api.newest()
-https://web.archive.org/web/20220118150444/https://www.google.com/
->>>
->>> availability_api.near(year=2010, month=10, day=10, hour=10)
-https://web.archive.org/web/20101010101708/http://www.google.com/
+>>> user_agent = "my new app's user agent"
+>>> cdx_api = WaybackMachineCDXServerAPI(url, user_agent)
 ```
-
-#### CDX API aka CDXServerAPI
-
+##### oldest
+```python
+>>> cdx_api.oldest()
+com,google)/ 19981111184551 http://google.com:80/ text/html 200 HOQ2TGPYAEQJPNUA6M4SMZ3NGQRBXDZ3 381
+>>> oldest = cdx_api.oldest()
+>>> oldest
+com,google)/ 19981111184551 http://google.com:80/ text/html 200 HOQ2TGPYAEQJPNUA6M4SMZ3NGQRBXDZ3 381
+>>> oldest.archive_url
+'https://web.archive.org/web/19981111184551/http://google.com:80/'
+>>> oldest.original
+'http://google.com:80/'
+>>> oldest.urlkey
+'com,google)/'
+>>> oldest.timestamp
+'19981111184551'
+>>> oldest.datetime_timestamp
+datetime.datetime(1998, 11, 11, 18, 45, 51)
+>>> oldest.statuscode
+'200'
+>>> oldest.mimetype
+'text/html'
+```
+##### newest
+```python
+>>> newest = cdx_api.newest()
+>>> newest
+com,google)/ 20220217234427 http://@google.com/ text/html 301 Y6PVK4XWOI3BXQEXM5WLLWU5JKUVNSFZ 563
+>>> newest.archive_url
+'https://web.archive.org/web/20220217234427/http://@google.com/'
+>>> newest.timestamp
+'20220217234427'
+```
+##### near
+```python
+>>> near = cdx_api.near(year=2010, month=10, day=10, hour=10, minute=10)
+>>> near.archive_url
+'https://web.archive.org/web/20101010101435/http://google.com/'
+>>> near
+com,google)/ 20101010101435 http://google.com/ text/html 301 Y6PVK4XWOI3BXQEXM5WLLWU5JKUVNSFZ 391
+>>> near.timestamp
+'20101010101435'
+>>> near.timestamp
+'20101010101435'
+>>> near = cdx_api.near(wayback_machine_timestamp=2008080808)
+>>> near.archive_url
+'https://web.archive.org/web/20080808051143/http://google.com/'
+>>> near = cdx_api.near(unix_timestamp=1286705410)
+>>> near
+com,google)/ 20101010101435 http://google.com/ text/html 301 Y6PVK4XWOI3BXQEXM5WLLWU5JKUVNSFZ 391
+>>> near.archive_url
+'https://web.archive.org/web/20101010101435/http://google.com/'
+>>> 
+```
+##### snapshots
 ```python
 >>> from waybackpy import WaybackMachineCDXServerAPI
 >>> url = "https://pypi.org"
@@ -123,13 +163,41 @@ https://web.archive.org/web/20171127171549/https://pypi.org/
 https://web.archive.org/web/20171206002737/http://pypi.org:80/
 ```
 
+#### Availability API
+
+It is recommended to not use the availability API due to performance issues. All the methods of availability API interface class, `WaybackMachineAvailabilityAPI`, are also implemented in the CDX server API interface class, `WaybackMachineCDXServerAPI`.
+
+```python
+>>> from waybackpy import WaybackMachineAvailabilityAPI
+>>>
+>>> url = "https://google.com"
+>>> user_agent = "Mozilla/5.0 (Windows NT 5.1; rv:40.0) Gecko/20100101 Firefox/40.0"
+>>>
+>>> availability_api = WaybackMachineAvailabilityAPI(url, user_agent)
+```
+##### oldest
+```python
+>>> availability_api.oldest()
+https://web.archive.org/web/19981111184551/http://google.com:80/
+```
+##### newest
+```python
+>>> availability_api.newest()
+https://web.archive.org/web/20220118150444/https://www.google.com/
+```
+##### near
+```python
+>>> availability_api.near(year=2010, month=10, day=10, hour=10)
+https://web.archive.org/web/20101010101708/http://www.google.com/
+```
+
 > Documentation is at <https://github.com/akamhy/waybackpy/wiki/Python-package-docs>.
 
 ### As a CLI tool
 
-Demo video on [asciinema.org](https://asciinema.org), you can copy the text from video:
+Demo video on [asciinema.org](https://asciinema.org/a/469890), you can copy the text from video:
 
-[![asciicast](https://asciinema.org/a/464367.svg)](https://asciinema.org/a/464367)
+[![asciicast](https://asciinema.org/a/469890.svg)](https://asciinema.org/a/469890)
 
 > CLI documentation is at <https://github.com/akamhy/waybackpy/wiki/CLI-docs>.
 
diff --git a/waybackpy/__init__.py b/waybackpy/__init__.py
index 98cba3d..1f4661a 100644
--- a/waybackpy/__init__.py
+++ b/waybackpy/__init__.py
@@ -1,6 +1,6 @@
 """Module initializer and provider of static information."""
 
-__version__ = "3.0.3"
+__version__ = "3.0.4"
 
 from .availability_api import WaybackMachineAvailabilityAPI
 from .cdx_api import WaybackMachineCDXServerAPI
diff --git a/waybackpy/cli.py b/waybackpy/cli.py
index 7342fd4..96d6445 100644
--- a/waybackpy/cli.py
+++ b/waybackpy/cli.py
@@ -379,7 +379,7 @@ def main(  # pylint: disable=no-value-for-parameter
 
     Documentation: https://github.com/akamhy/waybackpy/wiki/CLI-docs
 
-    waybackpy - CLI usage(Demo video): https://asciinema.org/a/464367
+    waybackpy - CLI usage(Demo video): https://asciinema.org/a/469890
 
     Released under the MIT License. Use the flag --license for license.