I still remember browsing in the days of Internet Explorer 3 and Netscape Navigator 3.
With Windows 95, Internet Explorer 4 upgraded the Windows explorer interface providing similar functionality that was standard in Windows 98.
One problem I do remember was that when I installed a clean Windows 95 installation, I had to install Internet Explorer 4 before Internet Explorer 5, as Internet Explorer 5 did not provide the Windows Explorer enhancements which otherwise would still be present when upgrading from Internet Explorer 4 to 5.
I'm glad I did not write HTML/CSS in those days as it was the earlier versions of Internet Explorer up to 7 that were a real pain to get webpages looking right as those earlier browsers did not follow the standards as well as the rivals. Even Internet Explorer 8 causes problems for some designers that still cater for Windows XP users as it's the only browser many users still regularly use that lacks support for HTML5 or CSS3.