1st time driving for $$ results- HELP

[K.D Neider]

So today I went out and d4$ for the first time. I wrote down about 40 address-9 were absentee ownersity and 5 listed owners as having the same address even though the house were vacant and/or sealed. I also went to my cities tax leins site and looked up who oowed what. So I guess my question is how do you determine what homes to go after and which ones not to? I'm new to this and any help will be greatly appreciated. 

Thanks,

Kea