What kind of beer do you like? There's Harp Lager created by Guinness, oh, and there's Guinness Stout. I prefer Murphy's Irish Stout. Try Smithwick's if you like red ales. I personally love Kilkenny, but you don't want something bitter.
The ONLY way to drink Guiness is in Dublin ... my cousin lives in Minnesota, and took me to an 'English Pub', 'cause he knew I liked Guiness ... the stuff they were serving tasted like it had been scraped off the road ... Guiness doesn't travel well, my friends ...
If you're after a nice Irish beer, try Caffreys ... *hic* ...