A gritty mix is best for succulents. Regular potting mix holds to much water for them. (Trust me I found out the hard way with my first jade plant) are you keeping them inside or out? Mine are indoor plants but they are put outside a few hours each day. When inside they are in a big bay window that receives bright light all day. Were they kept outside at your neighbors? If not I would get them acclimated to bright light first if they weren't kept outside to begin with. You need to put drainage holes in the pots ASAP. succulents don't like to be wet they need good drainage because they can get root rot rather quickly if kept in pots with NO drainage and water rententive soil. I've just started using Al's gritty mix, my succulents love it. You can search for the recipe in the tool bar. It is VERY informing. I'm sure someone else will comment and offer more advice I'm still new at this myself and I'm sure they can explain everything better. Hope this helps you :) also if you're not going to switch to a gritty mix (which honestly they like better) you should wait till the soil dries out befor watering again. Good luck !! :)

These appear to be Sempervivum. Most people grow these outside in rock gardens, etc.