Multiple tax liens in Dekalb co

[Jocelyn Bernstein]

I have multiple tax liens in Alabama and I’m unsure what to do or what way to go about any of them. 
my first is, a property that I will get a tax deed next year if not redeemed. The owners are down the road from me, drug addicts, and haven’t redeemed. I want a free and clear title. 
another property down the road, vacant, owners I can’t find and probably aren’t citizens of US. Redemption would be in 2026. I’m interested in taking ownership of property. 
another property located within the same vicinity, has multiple homes on property. One is unoccupied and needs a lot of work. Property owner, after doing a title search is still alive and well. People who reside in property are unknown, but are not owner occupied. I want to begin property improvements before property falls apart. What can I do? Thanks in advance.