this is actually a slightly advanced concept. i can try to explain it in an easy to understand way point at would almost always be to point at something you can see and is physically present example: he pointed at the picture on the wall point to could be the same as point at (example: He pointed to the door) but more commonly it's a direction or an idea - he pointed to the north - the evidence points to the boyfriend if you want to make it easier just always say "point toward" and i can't think of anything where it would be wrong. it might be slightly odd in some situations but it would still be correct. for instance: don't point that gun at me don't point that gun toward me both of the above sound fine but point at sounds slightly more natural. whereas it would sound wrong to say "don't point that gun to me"

I don’t know