Welcome to IIS Kilanya
The standard advice to newcomers is to attend a public viewing session put on by a local club if possible; that way you get to see all the different gear before buying.
The various EQ6 style mounts are good for astrophotography provided you comfortable lifting them (around 37 pounds for the head alone).
A 70mm to 80mm apo refractor is a good choice for getting into deep space imaging - you'll get sharp, colourful images with a minimum of fuss. Once you gain experience with fine tuning the mount, polar alignment and guiding you can shift to a longer focal length instrument.
You can also try imaging through any camera lenses you already have though I don't have any experience with that.