Yeast in mead? Which to use?

Both Ale and lager yeasts come in dry and liquid form, but the liquid stuff is a little more complicated and requires aeration. The dry stuff is the easiest and I would recommend it for your first brewing attempts. Ale yeast ferments at room temperature as opposed to the low temps required for lager, so I’d go with the Ale. The ones I use are Nottingham and Windsor. A company called Danstar makes both of these, and I’ve always had good success with their stuff.