Welcome to the forum, Sleepy.
As you mention browsers, do you mean defaults in browsers?
IE is simple, there are several options. For example
Tools - Internet options -
Security. Reset all zones...etc. Several windows under the tabs have the same opportunity.
Firefox has, I believe, similar options. I cannot remark on the others.
But I would suggest you have a look at your current configurations. You say you are learning - fair comment. But perhaps you can assess which browser is you favourite, and eliminate a couple of those? - Just a suggestion.