Here is the link to Kanban in DevOps
As for your concern, "items with estimates that vary in size from 4 hours to 14 days, or 2 to 55 story points". I think it would be better if we could sub-item i.e. create a separate user story rather than one big chunk else, the big user story could be taken as Epic and then divided into user stories.
As others said, you want to understand the purpose of the daily sync so that you can maximise the value your team takes from it.
If you'd like to have some more theoretical reference, you might want to start by looking at David Anderson's Essential Kanban Condensed book (there's a free PDF version and it's a very good resource to learn more about Kanban).