Very few of the "free" tabs I have seen are "correct" and some of the ones you pay for may not be the exact version you are looking for. As Dave says, Hank frequently played things slightly differently so what is correct anyway? Also one of the downsides of tab is that generally it does not give you any timing or rhythm information (I have seen tab that uses note stems and tails as in notation to do this).
Personally, if I find something difficult to work out, I will try to write out in tab and standard musical notation. Sometimes this involves using software to slow down the phrases in question. There is software available that will allow you to write tab and notation and will replay the score as Midi so you can check you have it right. I use GuitarPro but TuxGuitar does this too and is free. There are lots of versions of Apache on the Guitar pro tab sharing website but I don't know how good they are -
http://www.gprotab.net/search_tabs.php? ... che&page=1 - . While my sight reading is not good enough to play from the dots, a hard copy score does help me find my way through some of the tunes that I'm less familiar with.
So, by all means use a tab as a starting point but let your ears be the judge of what is the right thing to play. And as Iain says, if you learn all the scales and chords in different positions all over the fingerboard it will all become a lot less mysterious!