New to plants...

I was just given some plants to keep, and I know very little about them. I know they are succulents, but I am such a beginner I couldn't even begin to know what kind they are.

I am not sure how to diagnose problems. I noticed that two of the plants seem to have weirdness about them. The green pointy one has a bunch of leaves that have fallen off and has strange white spots. I have a picture of one of the spots. Surrounding the white spot is brown. It almost looks like when you burn a hole in paper. It also looks like there are a bunch of them in one pot? Should it be replanted?

The purple/grey one is lumpy underneath the leaves, is this normal? It doesn't feel 'mushy', just lumpy. The tips are also withered.

The green one with the thick bulbous leaves looks okay to me, but again I know so little about these plants I could be wrong, so I included it as well.

I don't want to guess and be wrong, so I don't know if these problems were caused by over/under watering so I want to be sure before I do anything. I don't want to think it's underwatered and water it more only to realize it was suffering from over watering!

I know the plants were outside in partial sun, though apparently one of them had been moved out of direct sunlight recently. It's been pretty hot here in texas.

Any advice/anyone know the names of these plants? The only plant experience I have is catnip, and it seems like that is like saying you grow dandelions in your yard, lol! It kind of grew itself.

Thanks!

hey Kat here my best shot... the top 2 are Anacampseros telephiastrum they look very healthy.
the 2 on the bottom left are haworthia, i beleive the white spots are on them? if so i wouldnt worry much, likly just a bit of sunburn...but do watch it close to spread if it does, its a fungus.
the 2 on the bottom right are echeverias some types have oddly bulbous or wrinkled leaves, i dont u have that tho, i think yours have been either roasted in the sun or underwatered, they can handle a surprizing amount of water when activly growing

sorry for the sp. mistakes, lack of cultural advice and lack of species names on them, but i bet u can find all u need now :D

The best way to water these succulents are bottom watering, that is sit the plants in a baking try of water, let the compost change colour to a darker brown, then drain the excess water away, this keeps the leaves free from water which can cause them to burn. IF you have to re-pot these plants buy the compost from the garden center for succulents or indoor plants, I add a handful of grit or (horticultural sand to the compost as this helps the good drainage these plants like, after I re-pot, I leave the plants SLIGHTLY above the top of the soil, then I spread very small grit, (different colours are available) I make sure this top dressing of grit is gently spread right under the bottom leaves and this dressing keeps the leaves off the soil, if the plants are to be grown outside, I re-pot them as above but set the plants at an angle, so any rain water cant sit in the rosette of the leaves as this causes rot also.
Your plants will send out little plants from the parent and once large enough to handle you snip the baby off and set it on top of the grit with the tiny stem just set into the grit, it will root and begin a new cycle of growth / babies, these plants don't ask for much attention except no really hot direct sun, they like warm, not too wet compost and only water when you see the leaves look like they are not fat and show signs of feeling soft to touch, other that that they are wonderful for beginners to learn to care for plants. have fun and good luck. WeeNel.

Thanks for the responses, sorry for the delay!

I asked some more people about watering and they also had told me about bottom watering. It has definitely prevented more burns.

I have a question about the Haworthia. The pot actually had two separate plants, one of which has been thriving, the other one has simple started to whither away. I ended up separating them, but I'm not sure if it's too late to save the sad looking one. So you can see larger images I posted them on photobucket-- http://s84.photobucket.com/albums/k22/purple_muffin/Succulents/

You can see how they have changed in the time I had them. I discovered the escheveria WAS really REALLY dehydrated, my friend came by and felt the leaves and told me it was probably going to die. It seems to have sprung back, but now it is growing kind of 'wonky'. It almost looks like it's not getting enough sun, but it is getting daily sun, especially now that the weather has cooled off a little.

I would love more advice! I love having plants now, and I want to do a good job. I feel bad for the really sick plant, if the main body can't be saved, do you think one of the little babies or leaves could be saved? I'll keep trying to keep it going, but it's never shown any signs of improving since day one.