Andres:
Web developers stopped designing sites for IE compatability about a decade ago. Most sites are now designed with Chrome, Firefox and mobile browsers (such as Opera, Safari, Dolphin, etc) primarily as their target audience simply because so few people use IE.
As has been said, get a decent browser (which is description which has NEVER applied to IE!). Firefox seems to be the most popular browser among AB members using PCs and laptops:
https://www.mozilla.org/en-US/firefox/all/
Chrome is the world's most popular browser (and has plenty of fans here on AB too):
https://www.google.co.uk/chrome/browser/desktop/index.html
Opera, Avant and Vivaldi are also all worth considering.