There are several videos related to different aspects of Counterwallet and they can be accessed on the Counterparty channel at YouTube.com:
https://www.youtube.com/channel/UC8L6aXXyobFGD2ADJVwRGoQ
Beware that due to the fast pace of development the current version of Counterwallet can look or function differently.
For practice with “fake” tokens, you can always get risk-free access to a test net version of Counterwallet (https://testnet.counterwallet.io).