This usually works best if you have documentation to support either the replacement of carpet prior to the most recent tenant or certification from your carpet cleaning company that there was no pet damage evident prior to possession by the resident in question. 

That is correct about giving you a quit claim deed but that is only after the redemption period is over and the taxpayer not only doesnt redeem but also doesn't file a lawsuit challenging the legality of the sale.The IRS probably doesn't care what happens after the sale just as long as they get their money...I assume all they are interested in is recovering their losses and what happens to the investor after the sale isn't their problem..therefore they aren't hopping up and down to answer questions on the matterI also have read that this is a VERY confusing part of the law...and could potentially be very costly for the investor to protect their interest...because all they really get during the redemption period is a certificate of sale...the taxpayer is still the owner of record and could sell the property.

Your profile says you are in Olney....Olney has a lot of houses built before 1979...if that is the case, did you have your lead inspection and receive your lead certificate?

1) Customized strong certificate of formation that does more than the state form, 2) Customized strong operating agreement, and 3) protections available vary on taxation choice of entity, so this needs to be handled pre-filing. 

If the first year's lien was auctioned but unsold, then it should be eligible for foreclosure 3 years after the first auction, at which it went unsold.Section 40-10-197Action to foreclose the right to redeem and quiet title; notice requirements; effect of foreclosure; deed; expiration of certificate.

Interior design alone can cost you 10% if they are educated (degree bearing, not certificate) and trained in interior design.  

Apparently, if someone is delinquent on their taxes, the property goes to a Tax Sale where the highest bidder (above taxes owed) gets a Purchase Certificate.

Does anyone know of any certifications or courses I could take? 

All those asbestos rules are tough to call on something like this.Its one thing to remove all the shingles without the proper certification so they can be replaced.

(New Jersey has a lot of crappy laws about getting new house inspections and certificates of occupancy “between tenants”).