Rookie Here So Is it right to top Autos ?

If you haven't topped photos before, then start with that. - Once you get consistent results, with only 1 - 2 days healing time needed, before they start growing again.. It won't be too much of an issue topping autos. The problem with topping autos, is that, if you do it badly It can result in the plant needing 1 - 2 weeks of healing, and you ending up with a tiny plant because of it.

Top only if u already know the strain and it will be too big for u

If you cut autos then you may have more even colas, but you may also have a much smaller plant. Lst is the main training method for autos. Cheers