I have seen a lot of videos on YouTube saying that the c major scale starts from A string 3rd fret and ends on the G string 5th fret that is it starts on C note and ends on the C note whilst your website says something entirely different please help me out
You should mess around with as many as you can. Over time you will choose your favourites. I would definitely advise against starting on non-root notes while you are practicing / learning otherwise everything will be much harder to visualise and remember. So if you use the ones on this site then always start from the black dots (root notes). You can then descend back and forward from there.
Play against backing tracks as often as you can as well. You will find some patterns work better for you than others.
Thanks man