So, i've been keeping herps on and off for about 15 years now. I've had a lot of ups and downs in that time and it has certainly been a steep learning curve. I joined FrogForum shortly after it was started, having been a member on Caudata.org prior to that.
So heres a rough list of what i've owned, in no particular order.
Litoria caerulea
Hyla versicolor
Hymenochirus
Xenopus
Ceratophrys cranwelli
Hyla gratiosa
Lepidobatrachus laevis
Ceratophrys cornuta
Phyllobates terribilis
Tylototriton shanjing
Salamandra salamandra
Ambystoma opacum
Ambystoma maculatum
Cynops orientalis
Paramesotriton sp.
Plethodon cinereus
Hyla cinerea
Bufo americanus
Bombina orientalis
Eurycea bislineata
Notophtalmus viridescens

I know i'm missing some species from that list, but not much else comes to mind right now. I am currently keeping almost entirely dart frogs, although that should be changing in the very near future! Right now I have:
1.0.2 Dendrobates leucomelas
0.0.1 Dendrobates truncatus "Blue"
0.0.3 Ranitomeya vanzolini
0.0.2 Ranitomeya imitator "Intermedius"
1.0.4 Ranitomeya variabilis "Highland"
0.0.4 Dendrobates tinctorius "Azureus"
0.1 Atelopus hoogmoedi
1.2 Pleurodeles waltl
I also have a handful of reptiles still including a Uromastyx, Sulcata Tortoise, Corn Snake and Ball Python.

I've learned a lot since I started keeping amphibians, unfortunately most of it was through personal error. It amazes me how far amphibian care has come in the last decade. I certainly made a huge number of mistakes early on, but sites like this have really helped in minimizing those errors in new hobbyists.
Here are lessons I learned the hard way, in no particular order.
~Always try to buy CB. When I first started almost everything was WC. I lost several animals within 24 hours of purchasing them.
~Clean water is a must. No big shocker there.
~Supplementation is really important.
~It's better to be diligent with care daily then try to make up for it weekly.
~Try to resist impulse buys (I still have issues with this!)
~Watch temperatures!
~Humidity is important, but so is ventilation!
~Watch out for pathogens.

I have to admit, I still struggle with some of these. And even with a major increase in knowledge and understanding (both my own and the entire communities), sometimes **** happens and mistakes are still made.
Case and point (mistakes I made just recently)
I lost 4 of my 5 D. truncatus. I have no idea why. My best guess is that I failed to sterilize the cage well enough in between, but nothing stings worse than losing a bunch of (pricey!) frogs all at once.
I also recently lost 2 Budgetts and my C. cornuta. One of the Budgetts came to me with some serious bloat that I managed to "cure". I use quotations there because I managed to spread the infection to the other (formerly healthy) Budgetts and my Cornuta, eventually losing all 3.

So, i'm definitely still learning. But mistakes i've made in the past have helped shape much of what I do now. I always bring a cooler to reptile shows, try to purchase only CB and try to hand pick all of my animals myself. I also spend time each day checking on and caring for each of my animals.

So that's the story of my animals. I think that means pictures are tomorrow?

~Alex