Give your home a makeover by changing your bedroom door knobs! First, figure out what type and style you want. Measure the size and decide how many you need. Then, buy them from a good store, comparing prices. Install them with the right tools. Check your local rules for throwing away the old ones - you can recycle or donate them if they're still good. Make sure all your bedroom doors have new knobs with locks, and that they work well. That's it!