Help for a Beginner - Multiple IE doing some stuff

Hello everybody, I' am a beginner so excuse me  if my question is banal.
I need to speed up a process. I get data from a website ad I store in a excel file but the process is too slow (mainly because website is very slow)
I thought that the simplest way was to paralellize activity and open more session of the browser.

Is there a way to create an array of IE session and make these working simultaneously (calling the same functions)
I didn't find the way to declare it and start a loop for the different objects at the same moment.

Could you help me?

Thanks in advance.

Stefano