Just dive in, be prepared to get it wrong the first time (and the next!) and find out what you can and can’t do and how it all works, and be prepared to start afresh when it all goes wrong. That’s the best way to learn.
For example, I only found out today that when you set up a feed that runs every 15 minutes, irrespective of when you actually set it up, the start time is on the next quarter-hour by Internet time, and the graph shows the value at half-way through the quarter-hour, at 8 minutes past the quarter (I think - I need to verify that). Now that isn’t documented anywhere that I’ve looked.