I apologize, I should have finished answering your question! Toby has probably been taught to step up in the last ten years. Do you know his history? Has he been well socialized? Is he accustomed to stepping up for people? Not to be nosy, but all those things make a difference when approaching your new friend. If he's a cuddly, gentle bird that's been treated well and has no reason to fear humans, your job will be easier. On the other hand, if he hasn't been handled or socialized in the last few years, training may present more of a challenge.
When you do start training sessions, please be cautious, those big beaks are powerful. When Toby is comfortable enough around you, approach him when he's calm, offer your forearm and ask him to step up, you may want to hold a small treat in your other hand so that your arm is a bridge, if he wants the treat, the logical step is to stand on your arm to get it. It's good to have a perch or play stand close to set him on in case he gets nervous or overexcited. Remember the first few times a large Too stands on your arm can be a scary experience for the Too, they startle easily in a new situation. If he is alarmed when you ask him to step up, don't insist at first, give him time to calm down and try again. If he's really alarmed, you can use a large dowel perch to start with, if he seems okay with that, place the perch an inch or so in front of him and invite him to step up. All birds are different and this advice may or may not apply with your bird. Another word of caution, if your Too has been allowed to sit on shoulders, he may try to do that, it isn't a good idea with a Too you don't know well. You can gently block him from climbing your arm, be firm, but kind and consistently calm. It's also not a great idea to let a Too very close to your face before you get to know him.
I wish you the very best and I'm looking forward to Toby updates.