If you are new to astronomy, like me, and are wondering about all of the different telescope types frequently mentioned here, you might be interested in checking out the site at
www.r-clarke.org.uk/starting_astro1.htm
where all is explained in a very easy to follow way. It has certainly helped de-mystify them for me.
I hope this is of some value.
Don
I really must think of something interesting to use as a tag line!
  