Hello,
In regards to collimation I think its worthwhile pointing out the scopes F ratio affects the easy of collimation. Roughly the collimation spot is the cube of the F ratio. So a F6 will have a 12mm landing area and still be considered collimated if your in the circle.
The slower the newt the less inclined I would be to recommend a collimator. Collimators give you confidence to try and a good rough mirror alignment, but you should still star test prior to a viewing session. So, its not a be all and end all either.
I would second using Gary's collimation pages I found them very useful. Also highly recommended - is
https://www.astro-baby.com/astrobaby...ian-reflector/
As a newb I had to have one, but now I think its best value was just for the confidence it gave me.
Steve
Ps. But still a newb