I think the biggest problem you'll face is maintaining  the enthusiasm required to practice and take on new things when  despair hits at the apparent lack of progress and  how long the road ahead seems to be. You likely will feel like smashing your incompliant guitar into a hundred pieces.

It is a long journey, and it's probably better if you can focus on the journey itself, rather than the goal of the destination.

Do you have any musical knowledge  to start with ?

I didn't have, and found ( and continue to find) that  every now and then something clicks and another  set of  things fall into place.  But it  can be frustrating and bewildering.

I wouldnt worry if you can't read music... Paul McCartney couldnt for  most of his career ( not sure if he may have learned in later years)  and he managed to  sort of struggle through.....

Many reasonably competent guitarists don't read music.