A Doll's House is written in a straightforward realist style, which makes it really easy for a modern audience to get into. There's no thick Shakespearean poetry to wade through here. The play is also very active. Not a word is wasted as the plot catapults to the climactic battle of the sexes. You should have no trouble getting wrapped up in this time-honored drama.
And, unlike poor Nora, you'll have an easy time getting out of this drama as well.