Thanks Vicki. I’ve discussed how I use retainers in these two articles:

1. https://medium.com/free-code-camp/youre-probably-calculating-freelance-rates-all-wrong-so-follow-this-strategy-instead-a5c738e51f70
2. https://medium.com/free-code-camp/how-to-work-with-freelance-clients-the-best-contracts-are-the-ones-you-never-have-to-enforce-fd1ccbfebec6