SEO Frustrations

As a continue to improve my web design skills, I still find myself somewhat perplexed when it comes to some aspects of SEO. The fact that I use a mac doesn't make it any easier to view an accurate preview of what the site will look like using IE. I'm still looking for an easier way to do this without having to use a PC computer. I wish there were a firefox extension for this purpose that will work on a mac. If anyone has any ideas, please share.