While I think that Kevin, VE3EN, has put up a great site with practically everything about the sun we need to look at, I prefer the higher resolution images that are available on the SDO site itself. Here is a link to NASA's SDO images. Check out the 4096 version of each.

Click Here

And Here

Here is a link to Kevin's site.

Solarham.com

Another site I visit daily is the QSL.net propagation page. Here is a link to that page.

The X-Ray Flux graph (shown at right, second image) helps to predict the solar trend.

QSL.net Propagation Page