I'm a little new to seo, and I was wondering if the way I end my front page matters. Right now, I externally link to my site with .com, but my internal links on my site are all .com/index.htm. I also noticed that when I go to my site at .com, it automatically goes to .com/
I'm a little puzzled by all these endings. Is this relevant to SEO? Should I be trying to harmonizing them?