Merlot.org has been the absolute most helpful site on the web. I have used it so much and will continue to use it in the future. It was very helpful and easy to use when looking for information on subjects like Fibonacci and the Golden Section. One of the big reasons I like it is because it is very easy to use. Another huge benefit is that almost every site I went to from Merlot had quality information; not just a bunch of useless junk. I would recommend this site to anyone that is looking for resources for teaching and learning.