Hi All
I am not trying to recommend this store, but, I did a quick google for intro to telescope types, the links looks like quick, simple outlines of some basic information that will help you understand some terms. I expect there are better intros out there.
https://www.ozscopes.com.au/guides/t...-of-telescopes
https://www.ozscopes.com.au/guides/t...lescope-mounts
Also, look through this link for more, and possibly better information
http://www.iceinspace.com.au/63-260-0-0-1-0.html
There is a lot of good information in the Projects and Articles section of this website.
Philip