If you want double-digit cap rates and COC returns that are landlord-friendly, I have found that KC and OH have been great at delivering those types of returns.

It is usually best to have a process server deliver notice, so you have a third party affidavit proof of delivery.

Most gurus promote their programs and deliver bad or illegal advice on how to, so be careful depending on your state laws.

What percentage I have no idea but the government believes it would be substantial enough to not deliver direct payments, the same way that food stamps are delivered by cards that (theoretically) can only be used to buy food in a grocery store.

The government will deliver your goods base to base.  

From small works I've done before, i.e installing an exhaust fan, I bought the fan online, got it delivered to the house.

Well done sirI would acquaint  yourself with the math to reflect how current or improved rent and all cost deliver cash flow for the tenant or value over time in a buy and  pure hold strategy Most investors do this on their own however they love a professional who understandS how to make these investments really perform keep it up sir

It is such a great help in setting up STR, as you could have (almost) everything delivered into the garage without worrying about porch pirates.

If so are you required to deliver it vacant or can you let the new owner deal with it?

I can PM you my lawyer (he is reasonable and honest, will not be promissing you things that he can not deliver), but there is not very much you can do.