make sure your soil drains well and that the water has somewhere to drain to (i.e. make sure your pot has holes in the bottom so excess water can drain out, as opposed to pooling at the bottom of the contained and drowning the roots).
got to a hardware store's gardening center, buy a general-purpose fertilizer (something like a 6-6-6, 8-10-8 or anything with three relatively similar numbers), read the instructions, and fertilize lightly. over-fertilizing is not a good thing, better to go light.
when moving the hops from your pot to their permanent home, try your best to not disturb the roots and the dirt around them. in practical terms this means preserving in place as much of the soil as possible. the ideal transfer would maintain all the soil against the roots/rhizome, although in practice some will invariably be lost. put some compost or manure in the hole before adding the hop (and it's "soil-ball") on top.