[@MissCapnCrunch]

I think you should be alright; I don't think the 50's were covered all that much in Harry Potter lore in terms of important things happening. Either way, I'll be putting up timelines of recent important or relevant events that have occured in both the wizarding and muggle world around that time, for folks to read. I guess you'd just have to be aware of spells, creatures, etc? Even then, it would be a case of just googling it whenever it comes up in the IC, but I'd say having just watched the movies will be more than enough to join in. :)