These URL pages are made for a better understanding of EXCEL and POWER BI from Microsoft. On the right, you can find my own channel on YouTube with my self made video's It is a collection of my favorite sites I found on the internet. Some links refer to my Dropbox where you can download some files to practice. I hope this page contibutes to the learning of two awsome products of Microsoft. aug 2026: I will update this site, but there are still a lot of obosolete links.