Easy Beans:
On the Fifth Floor you can gather beans from all the objects (not statues). I got five per pot/object. Then exit the fifth floor and take the door to your right, (the only other door.) Slide down the ramp and open the door. This will put you on the fourth floor. From her hit the other two pots three times each. Then repeat untill you only get three or fewer beans. Save game and quit. Restart your save game and repeat.
Merit Badge location:
Face Fat Lady painting. Turn around and go straight towards the wall. To your right will be a door. Open the door and turn right. It should be right next to you.
Find secret beans:
Watch where Harrys head moves and flippendo the thing he looks at (generally jars or statues/treasure chests)
(supplied by: Cooky)
Nimbus 2000:
After you have completed the challenge at the quidditch stadium, you will receive a Nimbus 2000 broomstick. Once you have equipped this you can use it to fly around the hogwarts grounds. Look for the coloured hoops and subsequently fly through them. You will be rewarded with free bertie botts beans. This is a quick and easy (and fun) way to get beans, especially for Neville's mini-games.
(supplied by: Pete)
Easy beans:
Go to the second floor through a secret passageway. There are three chests. You can get about 15-20 beans after you fill-out the chest. When all chests are out of beans, exit the door, then go back in. Keep doing this as long as you like.
(supplied by: mkcalhoun)
Features:
FAQ/Walkthrough.
Features:
FAQ/Walkthrough v0.7.
Features:
FAQ/Walkthrough v1.2.
Features:
FAQ/Walkthrough. Final version.