When you go to your Beanstalk House in BB 2.0 Land, you will notice a new sign that says "Garden".  Clicking on this will take you to your Garden (obviously haha).  Once there you can take Green Beans from your Bean Bag and plant them in the four holes.  You will also see that pesky watering can that Mayor Bean gave you long ago (Yeah, BTW, where IS mayor Bean since Snootz showed up and took over his office?!  haha) ...  anyhow, take the watering can that is always full and water your Beans that you planted.  Some will require more watering than others but each stalk that sprouts will yield one Bean, with "values" that vary.  See the chart hanging on the shed for the "values".  Check the "Help" section on your screen for more specific gardening instructions.

Which brings me to my next thought.... the Help section of the BB 2.0 site has greatly improved.  WTG Ty!!!!  The improvements are so nice that I no longer need to update my FAQs.  yeah, grumble....  thanks for making me obselete, Ty hahahaha.  Oh well haha. 

Here are some screen shots of the gardening process.  If you have the patience for it, it's kind of fun and not totally unlike gambling, like Aphrodite had commented on the TyTalk Board. 

Enjoy!