1) you won't get any colour when observing, galaxies will look like a grey fuzzy , unfortunately you won't get the views you see in images
2) the minimum you need for any real galaxy images is an eq mount, a scope, dslr and a t ring to connect the dslr to the scope. Software wise you will need some stacking software like deepskystacker and something like photoshop
3) it is possible to observe galaxies in light pollution, I have seen them in the middle of Sydney but manage your expectations. It is incredible that you can observe these objects but they don't look like the Hubble images
Ngc 253 is a good target at the moment, also the smc and the Lmc can be observed naked eye.
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