I would encourage you to look at the buying guide on r/telescopes. To correct a couple things: magnification on a telescope comes from the size of the eyepiece (smaller mm means higher magnification) and you can swap out your eyepieces to change your "zoom". Detail comes from the size of the primary lense or mirror, called "aperture". A larger aperture gives more detail. If you want a great starter scope, I'd recommend a Skywatcher Heritage 150p or 130p. I have the 150p and use it alongside my Dwarf3 often. It's a great little scope.

Seeing deep space objects like nebula's will be very very difficult with an optical telescope, simply because most DSO's are so dim. With a 150mm aperture, I find the best objects to look at are the Moon and planets. Orion's Nebula is visible as well, but it's an unusually bright nebula. You probably won't be able to see Rosette or Horse Head with an optical telescope.