Sorry to be the bearer of bad news but . . . there's not a whole lot of "interesting" in Reading, I'm afraid. There's a smallish museum in the towne centre. A fairly nice high street and two malls. Cinemas. However, from Reading, you are only about 40 mins from London.
As for restaurants . . . lots of little pub places in town, a TGIF's, Carluccio's (which isn't exactly cheap, but not ott and definitely worth it), Chili's, Wagamama's, Nando's, etc.
What else? There's the Kennett canal that runs through the town and that's quite pretty. If you decide to take a walk along it, though be careful. I'd stay closer to town - there have been a few "happy slapping" incidents relatively recently.