No, germs from our hands don't seem to hurt salt water creatures, as far as I know.
A feeding stick can be made from two long thin wooden skewers or acrylic - even plain wooden chopsticks. Just something to offer food with.
Even after you get your aquarium, the cycling will take about 3 months, so you have some time to wait before you can get your octo.
You asked elsewhere about water - you can buy RO (reverse osmosis) water or even better RO/DI water from your LFS or elsewhere and add the salt to the water yourself. Some LFSs sell salt water, but often the salinity is too low and you have to add additional salt.
Nancy