Use the text below as a starting point and customize to suit you needs.
Dear [boss],
As you know, I spend a good part of my day in Excel.
Although I can usually figure things out, I could be more productive with training. I think this might be a good option:
The training is self-paced, with short videos I can fit into my schedule easily.
The site is well organized, and they get good feedback .
Would the company cover the cost as part of my skills development?
Please let me know what you think.
Thanks,
[your name]