beesue wrote:
I'm not sure of what filters to order
By far the most useful filter for digital photography is a Circular Polarizer.
If you bought the camera "in kit" with a lens, that would be the EF-S 18-55mm. It uses a 58mm filter. All things considered, I recommend high quality, multi-coated B+W F-Pro or X-Pro Circular Polarizing filters, which cost $57 and $65 respectively in that size. Those filters are actually a very good value. Other C-Pol filters with the same features and quality cost 50% to 100% more. There are cheaper C-Pol, too, but they aren't multi-coated, use lower quality glass, etc. Keep in mind that a filter will effect every image shot through it.... So I want the best quality possible and don't think it's worth the few $ that might be saved buying cheap. But, at the same time, I see little reason to spend 1.5X to 2X as much with no further gain in quality.
A C-Pol filter isn't something you need to use all the time. But it is easily the most useful of all filters for digital photography and can do things that cannot be replicated in post-processing (where most other filters can be pretty easily emulated). See Steve's video for more info about using C-Pol filters:
https://www.youtube.com/watch?v=vMOsBG2JaZYOther filters that might be less frequently needed, that are considerably more specialized, include Neutral Density in various strengths. Those are used in bright light to make extra long exposures (tripod required) or to be able to use really large lens apertures (which the 18-55mm doesn't have). UV or Clear Protection filters are the only other type of filter that maybe needed, but really only serve any purpose when out shooting in a sandstorm or at a paintball battle or similar. I usually use one at the beach, just to be safe and because salt spray is difficult to clean off optics.
Canon EF-S 18-55mm lens doesn't come with a lens hood. I'd highly recommend you get and use a matched hood because it both improves images by keeping oblique light off the lens and it helps to physically protect the lens from bumps and damage while shooting. There are several different EF-S 18-55mm lenses and they use different lens hoods. So, depending upon which of those lenses you got with the camera, you'll need EW-60C for an EF-S 18-55mm IS "II" or an EW-63C for an EF-S 18-55mm IS "STM" lens.
If you got the two-lens kit, the second lens is probably a Canon EF 75-300mm "III" telephoto zoom. That also doesn't come with a lens hood (only the premium "L-series" Canon lenses come with hoods). Get the ET-60 hood for use with that lens. The EF 75-300 "III" also uses 58mm filters, so it can share whatever you get for use on the 18-55mm.
Canon's own hoods for these lenses aren't terribly expensive. But there are slightly cheaper third party hoods... Manufacturers such as Vello offer close copies that probably work just as well.