The first snake that I got was also a Stimson Python, now I have a pair of Stimson's.
Well first off you should let the new one settle in for 2 weeks (Just leave him alone, Just top up his water if its empty) Then I'd attempt to offer him a feed, then leave him a couple of days. Then start to handle him for 5 minutes or so just because he's still settling in.
Depending on your confidence, you can put your hand/arms into the enclosure/click clack/whatever - I normally do that just so the snake knows that I'm there, They usually come up to you and flick their tongue, then they'll either stay there and go into a strike position if they're uncomfortable or they'll just carry on as they were, Then I just scoop them up with both hands supporting all of them, and they're usually fine.
If you don't feel confident in just picking them up with your hands, you can invest in a snake hook. This way you can just hook the snake out of the enclosure and then place the snake on your hand. I know that a lot of people use this method. I didn't even think about using a hook to get the snakes out, when I got my first python.
In saying that - Some snakes just don't like to be touched, Also. Some snakes are cage protective and in this case it's more than likely required to use a hook to get them out without them biting you.
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