Some good websites to learn about bents are:
www.bentrideronline.com
www.hostelshoppe.com
www.recumbentcyclistnews.com
www.bicycleman.com
www.recumbentandtandemridernews.com
Links are at the top of the main page on BentRiderOnline to many manufacturers.
There are reviews of some bents on BROL under "extras". Some reviews can be found on
www.roadbikereview.com under manufacturer's names.
Locations of particular bents at bike shops can be found by going to the manufacturer's website and searching under "dealer locator".
Big recumbent rally in NY state (BROL) Aug 20-22 and also Hostelshoppe holds it's annual rally in August. Check out their websites for details. Here you can view and ride many different styles of bents and meet riders from all over.
Where are you located?