Congratulations and welcome to the club! Definitely the machine of a serious writer or novelist. These were the workhorses of newspapers and magazines through the 70s and 80s. In my mind, it's the last truly great manual typewriter ever manufactured.

Well known users of the Olympia SG3 included: Ingeborg Bachmann, Jimmy Breslin, Paddy Chayefsky, Philip K. Dick, Harlan Ellison, Michael Ende, Howard Fast, Jim Lehrer, Elmore Leonard, William E. Leuchtenburg, Terrence McNally, James Michener, Dudley Randall, and Wallace Stegner

Robert Redford used one in the movie ALL THE PRESIDENT'S MEN.

If you need a manual: https://site.xavier.edu/polt/typewriters/tw-manuals.html

Ribbon is still easily found: https://site.xavier.edu/polt/typewriters/tw-faq.html#q1

The Olympia SG3 uses 1/2" wide (12.7mm) typewriter ribbon, which has been standardized as DIN2103, in combination with the Group 1 spool, designated as DIN 32755. (Doesn't need eyelets.)

Other useful resources available at: https://boffosocko.com/research/typewriter-collection/

reply to u/Prudent_Highway_1855 at https://www.reddit.com/r/typewriters/comments/1tdy2eu/my_first_typewriter/