Expired domains net:
Register and login:
just to check all the options open tab "Deleted .com"
you will have all the deleted domains list.
There are many filter options, you can set filters and check different combination
Also check and explore all the tabs on top.
You can learn from this only when you will explore their available options. You can save your options as well. notice this on top left.
I hope this is what you are looking for.
DNJournal, i do not often use this one,
Read the forum. See what people are requesting here. Win an auction or two. Dip your toe slowly until you get a good feel for things. Keep it manageable. Nothing worse than getting excited and winding up with dozens of worthless domains