I have tried a lot of different systems. I happened to stumble upon this website and it has been a godsend for me. I love it. It's so simple.
I absolutely love this system. I can't say enough about it. It's my favorite calculator available. There's lots of them out there. This one is the most user friendly and the quickest to learn.
The website has been a great help to me, I was buried in a ton of note paper until I got on here.