Nobody on the planet has ever said this and have it be true. If you
can code with C++ (

) then you can pick up JavaScript with no trouble at all.
Good luck buddy. Assuming that you want to archive on one of the archive.today sites, I doubt you'll be able to get anywhere with a headless browser (I'm pretty sure the jackass that runs the archive sites has rigged them with captchas and other bot-traps). So you'll probably want to check out Selenium or something to automate a graphical browser that you control using code:
They've got some Python demos on the website to help get you set up with everything and there's tutorials everywhere for this shit. It'll be a decent amount of work, fair warning. And past a certain point, just manually archiving this guy's Twitter yourself by passing in the tweets one-by-one is quicker
and less autistic.