For this purpose, have a note pad out, much like getting an IFR departure clearance.
Write down M M2 B3 B hold 25R 121.9 hold 36L (though it's not very likely you'll get two hold short instructions at once -- "cross 25R" is quite likely, though).
Then locate the four mentioned taxiways and the runways on your taxi diagram. Make sure you know where the "ramp" is.
This happens frequently at complex airports, and it isn't always necessary for them to be busy (e.g., Concord, CA can have some really hairy taxi instructions). Ask for progressives if there is any doubt, but do it in addition to your homework, not instead. If Ground gets distracted, it's your certificate on the line, not theirs.
Even at Palo Alto, which is about as simple as a towered airport gets, we've been getting taxi instructions like "Taxi 31 via H Z M" since the parallel (Z) got restriped. If the airport has a taxiway diagram, make sure you have it on you.