If I but a tax deed, what are the steps to get a marketable title?

Answer 1

Start by paying off all the other liens on the property.

If you have not yet bought bought the tax deed, make sure to check for other liens first.

Answer 2

You'll only get a quitclaim deed.

Run a title search to see if there are any other clouds on the deed and clear them, i.e. pay them off. Once that's done, take out a title insurance policy.