Local Bike Store (LBS) is a good source for someone starting out.
Each brand has a variety of bikes with relaxed geometry... including comfort bikes and hybrids, try several of them and pick the one within your budget that you like the best.
I know the Giant line, and depending on your specifics there are at least four worth exploring.
The Sedona (what I have ridden mostly) a comfort bike leaning toward the mountain side (26" knobby tires).
The Cypress (pretty much a Sedona with 700c wheels) a road oriented comfort bike.
The FCR... A fitness bike... basically a road bike without the drop bars.
The OCR... a drop bar road bike with the most upright posture of the Giant line-up.
Then there are others...
Each manufacturer will have similar bikes to choose from.
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Slow Ride Cyclists of NEPA
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