Well, first you'd need to find a place with a nitrogen-cooled tank made out of a special alloy open-cell metal foam encased in a high-pressure-rated carbon fiber hull. Hydrogen is incredibly difficult to store, and requires specialized equipment and constant active cooling, which means running pumps and high-power apparatuses to continuously refine and condense liquid nitrogen and dry ice coolant.
Your car would store the hydrogen less efficiently: parking for a long time would drain your tank, so infrequent drivers will consume more fuel than frequent drivers. Electric cars do this, too, regardless of electronics; but even a NiMH battery can hold 70% of its charge after 1 year of disuse. Tesla drains too much power keeping standby electronics on standby. Gasoline sours, but you can add treatment to store it for years. Between electric and hydrogen, it's potentially a wash, unless hydrogen leaks much faster.
Beyond that, the fill-up method is roughly the same as gasoline, aside from needing to use a sealed, pressurized connector. Misaligning the connector will vent hydrogen, if it's misaligned in such a way as to satisfy the safety mechanism yet not gain positive seal. Fortunately, the car will likely contain a one-way valve (a ball on a spring, or a ball not on a spring but with a grate behind it such that internal pressure forces it up to seal), so your tank won't vent: it'll only open the valve when the pressure outside is greater than the tank pressure.