I'll give you an honest response:
The hiring process is simple. As long as you can pass a drug test, talk to the interviewers for more than 30 seconds, and can pretend like you know a little bit about the area you're applying for (even if you're making it up. As long as you can give technical jargon about a product that would confuse the average buyer, even if it's random stuff from a Star Trek episode), you will be hired if they have a spot open. Fortunately for you, BB has a turnaround rate higher than your average restaurant.
Getting in is simple. Staying in is the hard part. You will be forced, with the penalty for failure being you get fired, to sell those service plans to almost every single customer that walks in. You will be required to sell (at least in the computer department) a minimum of 3 overpriced by 400% accessories per computer.
There is a monthly meeting, on the first sunday of every month, that you are required to attend but ammounts to nothing more than your store manager telling every department how much they suck and that they need to work better. Hope you have thick skin, unless your store is the best in the district... in which case you only need medium skin ("you suck, we could do better, but at least we're ahead of the others").
Honestly, if you're smart enough to ask a technical forum what the BB jobs are like, you shouldn't go there. They might not be as blatently and in-your-face forcing their help wanted ad's at you, but there are 100 other jobs at the moment that are looking for the skiills you have and are paying more money.
EDIT: Yes, the discount is very nice. They actually use the discount as a hiring tool to sucker potential employees in. Don't let that be the reason you hire on.