No offence intended, but me thinks you don't need any unless your stereoscopic vision is restricted.
1) as a beginner, your shots won't be too long and quite unpredictable. Just try and check out which club to use in a certain situation and produce solid shots. Map your clubs and consider that you might improve ;)
2) For good use of a range finder, you should be able to shoot the distance indicated. That is, a shot of 80 yds when 80 yds out. Many amateurs only scarcely succeed in that task.
After ten years, I only want one distance marker on the course, and I try to figure out the best shot from my distance estimate as a part of the game. Most british courses have at least a 150 yds indication (+90 in many cases), German courses show 200 - 150 - 100 m, and my limited experience of US courses calls for markers there, too. Frequently, there are indications on the sprinkler heads, too, and modern carts have GPS and screens.
My 2 Pfennig: Enjoy your time on the course and in nature without too much extra equipment!