My bro-in-law and I are thinking of heading to the Tahoe area in March to work on our snow and ice skills. What locations with easy winter access can you recommend we try?

define ice skills? If you mean...ice climbing, I'm guessing you should just drive the extra few hours from Tahoe to the east side...provided conditions there are ok.

If by snow skills you mean self arrest practice or something, could probably do that just about anywhere. Donner pass area maybe?

Alpine skills...you mean suffering? :P

But +1 on defining alpine skills and what Sean said. Or you could just climb tahoe crags in the snow...but for the love of Muir don't dry tool.

I recommend you and your bro to go up to lovers leap and set up a top rope on Hospital Cornerer. Drytooling that thing would get you dialed for alpine!

East Ridge of Round Top
Crescent Moon Couloir
Mt. Tallack is awesome, there are several routes on it to ur desire.
climb Eagle lake buttress in crampons by the 4th class way maybe.
go to lee vining and TR/mock lead/lead based on your comfort.

good luck

please no dry tooling at the leap