You're in luck - an excellent movie trilogy (with occasionally dodgy cg) that covers the events of the anime series is currently on Netflix. Against all odds, the dub is actually really good, too.
Ew, no. The movies cut out WAY too much material and rush like crazy. Please avoid the movies until you read the manga.
Nightbird
In terms of what's good in Berserk and what isn't:
1. Manga - Just read the manga, none of the other things come close, at all. If you watch the movies you'll ruin the emotional attachment and bond you're supposed to have with people.
2. 90s Anime - It hasn't aged well, and changed some story beats in the first and final episodes, but so far, it's *by far* the most accurate adaptation of Berserk there is. That, and it has a wonderful, melancholic OST.
3. The movies - A very, very, VERY distant third. They rush through a lot of important things and let character development fall by the wayside just to animate a certain part of the third movie in a more explicitly long fashion - Watch them if you want more Berserk after you're done with the Manga and TV.
4. the recent TV shows. Screw those. Don't touch them.
Honourable mention: The Dreamcast game. An original story by Miura himself. It's state in canon hasn't been defined, but it still kind of sort of fits.
