I have taught Henry to step up and down from both inside and outside the cage. while people feel that's it's good to allow their birds free-range within their home, I personally like to be able to get Henry in and out of his cage when needed and without causing any stress to Henry. I used a clicker and treating treats to achieve this.
I would put Henry on his T-stand and gave him a sunflower seed and click the clicker. This indicates that training has started.
Then in my right hand I held the clicker and the sunflower seed. The set up was the clicker in the palm with my middle finger on the button and the sunflower seed held between my thumb and index finger.
With my left hand I made a pistol, so my finger was parallel to the T-stand and about 3 cm away. Then I would bring my right hand up behind my left hand and show Henry the sunflower seed and say, "step up". if after 15 to 20 seconds Henry hadn't stepped up onto my left hand I would remove the sunflower seed from his sight.
Wait 20 seconds and reshow the treat. When Henry stepped up onto my left hand and took the sunflower seed I would click the clicker at the same time.
Then to teach him to step down, with henry still on my left hand I would bring it parallel to the T-stand and about 3 cm away. Then with a sunflower seed in my right again, I would bring my right hand up So the T-stand is between my left and right hands.
show Henry the sunflower seed and say, "step down". if after 15 to 20 seconds Henry hadn't stepped down onto the T-stand I would remove the sunflower seed from his sight.
Wait 20 seconds and reshow the treat. When Henry stepped down from my left hand, onto the T-stand and took the sunflower seed I would click the clicker at the same time.
The advice I can give is
1 move slowly around the bird
2 let the bird come to you.
3 Don't force the bird to do anything that it doesn't want to do.
4 make the trust building and bonding sessions (training) fun
5 end all training sessions on a positive.
6 patience.
Remember food is a great motivator.