Step 1: How Tame Is Your Budgie Already?
2.If your bird is already comfortable with you being near the cage go to step 3.
3.If your bird already lets you feed or touch her/him go to step 4.
4.If your bird does step up onto your finger go to step 5.
5. If your bird can do the above already then wait for the second sequel(if it has not come out yet).
Step 2: Get Your Budgie to Be Comfortable With You
P.S:Music might help your budgie get used to its new surroundings.
P.P.S: What Music? Keep trying different styles till your budgie starts chirping at one.
Step 3: Getting Deeper...
Then get some millet spray and hold it near your budgie's beak. After a space of time it will start to eat it. I can't tell how much time because my budgie did it instantly while someone had to wait 45 mins! Then when your budgie gets comfortable with that try ripping off some of the millet's "balls" then put them in your hand and hold then near your budgie's beak. Again I cannot tell how much time it will take.
Attached is a vid of one of my budgies eating millet(from the stick).
Step 4: Step-ups
You start by getting your index finger and slightly pushing it agains the space just above your budgie's legs. The budgie should lose its balance and step on your finger. If it steps with one leg just push the space above that leg a bit more. Keep practicing that.