Surprisingly, hand-feeding hummingbirds isn't so hard -- planting flowers that hummingbirds like is the first step. According to birding expert Melissa Mayntz, the rest is all about patience:
Once hummingbirds regularly visit the feeding station, it is time to get them used to your presence. During the most popular feeding times, sit outside several feet away from the feeders. Each day, move a small step or two closer to the feeders, but remain still so the birds are not threatened. Avoid any sudden moves or unnecessary sounds while the birds gradually learn that you won't hurt them.
Mayntz adds that holding the feeder very still and wearing bright red will also attract the birds, noting that "with patience and perseverance it can be surprisingly easy to arrange."
Here are some other hummingbird hand-feeders: