First, you call a REALLY GOOD teacher. One with a degree in music, if you can find one, or at least many years of successful teaching experience - LEGITIMATE teaching - not the stoner at the local strip-mall music store. THEY will advise you about what guitar to get. They also will know ( if you chose well) how to structure lessons that constantly have you moving forward, in the size steps that work for YOU. You should feel that your DAILY PRACTICE is leading you somewhere. No, you will not shred anything the first lesson - except maybe the phone numbers of the LOSER "teachers" (I hate to even use that word) that you found out were terrible. There is no substitute for excellent education. Avery dollar spent on a fine teacher is worth it - and every nickel spent on a poor teacher is a waste of money. Good luck - but do this right, or take tennis lessons instead.
I have made ever single dollar in my entire life in live professional music performance, music education, and studio music instruction - since 1973 (that was after my first of 3 degrees in music.) I am not special - there are millions of us out there with similar credentials