HI Everyone I have been seeing a few folks having troubles with the Raspberry PI B+ with regard to getting it up and running so in co-operation with E14 I have put together this video in the hopes it will show you how straight forward it should be.
I took a brand new PI B+, empty 64GB Micro SD Card and the old Wireless keyboard, mouse and WIFI dongle to use with the new board
The whole process took about 30 minutes to do (That does not remotely cover the time to prep the video of course) but you should be able to do this in a similar time frame
Takes about 5-10 mins to download the image
a couple of minutes to unpack it
5 mins to write to the SD Card
and about 15 minutes to start up and configure the PI from a new image on the SD card
The RPI B+ Download Page: Downloads | Raspberry Pi
I chose the DEBIAN image here http://downloads.raspberrypi.org/raspbian_latest
The WIFI Dongle I think is this one 814 | Adafruit Industries 814 | Miniature WiFi Module for Raspberry Pi