I've watched a couple of online classes.
"Homestead Records" by Roberta "Bobbi" King (presented 27 Apr 2010)
Very good and made me excited to find some homestead records, except for the fact that I have to get them from the National Archives (NARA) by filling in the Range number and some other numbers (I'll have to go back and check). So hopefully I'll be able to track those down by looking at some land records or plat maps.
Today I watched GenealogyBank.com, a huge repository for newspapers and some govt. publications. I think it's subscription, but it's free to search and the library probably has usage available.