Any masters of Microsoft Office? (Excel, Word, Outlook, PowerPoint)

[STG]

TGIF friends! Just a random question. Are any of you MO experts? I love using excel, but I'm hardly advanced at it and realize there are SO many cool things you can do, along with all the rest of the MO stuff. I know most people are not advanced, but for those who are, how did you gain your experience?

Some of my excel knowledge came from a high school course. However, I would love to be an Excel/PowerPoint master. It's SO useful in the business world. Do you guys take online classes, etc.? I searched for interactive classes, on them, and couldn't seem to find anything..esp. that wouldn't cost an arm and a leg. I have tutorials for all of them, but I feel like I learned the most when I was in my high school class and the teacher explained it and actually graded us and had us do the spreadsheets. Am I geek for thinking these two programs are so cool and wanting to become masters of them? LOL

I also had a class to teach me about Excel but I never understood it... For PowerPoint and Microsoft Word my high school taught me a lot (especially PowerPoint). For my bio class that I'm taking we need to work in groups to make a slide show and I'm happy I'm an expert with that...
The way our teacher taught us was by telling us to play around with all the buttons and see all the animations and sounds you can put in but I still never got it until she made us make a slide show of our own with 50 slides and we needed to add in music so she taught us all the different stuff and we worked on it for about 7 months...it was kind of annoying at first but once I figured it all out (by asking a million questions) it was fun and I got an A