Best settings for photography, model specific. Samsung NX1100?

I have a Samsung NX1100 20.3mp with a kit lens 20-50mm f3.5-5.6 ED. I know I need more lenses to cover additional things like landscapes, macro, and varying portraits but I can't seem to find any help for my specific model. I also know it isn't the standard Cannon or Nikon so I hope the information is enough.

First, yes- I have checked my manual for settings and advice, and I have also tested varying settings for different things to experiment. Most people say f8 seems to be a good aperture for most things like portraits etc, like a sweet spot. But I would like to get more practice with this lens before taking the plunge for the 50-200mm etc which run around $300+ for this camera.

Second, I do look at tons of guides, blogs, and webinars when i can. It has helped me learn a lot. I would just really appreciate advice from people who have been photographers for a while on what the optimum settings would be for this camera specifically if possible.

The NX300 is the replacement for my camera, also I think the new NX30. I may purchase them at some point when I'm more comfortable with my current camera first. This is a link to the camera on walmart, which gives some more specs. Http://www.walmart.com/ip/Samsung-20.3-MP-NX1100/24471469

PS. I will also be shooting in RAW, and use Lightroom 5 / Photoshop.

The brand of a camera isn't important… The most important thing to get great images is to understand how to 'control' the camera in different lighting conditions, optimum settings can be suggested to help you approach a 'subject' or type of photography, like 'sport' or 'landscapes'… Nobody could really give you any settings set in stone because the light that is available dictates what needs to be done… A photographer uses their experience to decide what effect they are after and then sets the camera accordingly… Even 2 photographers photographing an identical scene using the same equipment might decide to set the equipment differently… This is what makes some photographers better than others.

The NX1100 is a bit of an "odd duck" -- a mirrorless 4/3rds-sized body with an APS-C sensor, but of course a non-standard "Samsung NX" lens mount, so you can't actually take advantage of any standard DX lenses.

"I know I need more lenses to cover additional things like landscapes, macro, and varying portraits but I can't seem to find any help for my specific model."

You can mount (only) Samsung NX mount lenses.
https://www.google.com/...s&tbm=shop

"Most people say f8 seems to be a good aperture for most things like portraits etc, like a sweet spot."

Umm, no, most people do not say anything like that, as that is completely wrong. There's no "good aperture" for anything -- the correct media sensitivity, aperture and shutter speed are all completely dependent on lighting conditions and how you wish to capture the image.

"I would just really appreciate advice from people who have been photographers for a while on what the optimum settings would be for this camera specifically if possible."

There are no "optimum settings" for a specific camera. Again, media sensitivity, aperture and shutter speed are all completely dependent on lighting conditions and how you wish to capture the image. Forget trying to find specific settings for your camera… You need to study and learn the basic foundational theories for photography. How media sensitivity, aperture and shutter speed interplay with one another to capture an image. How the camera (or external) light meter works. Rules of composition (and when to throw them out the window).

The model camera body you are using is irrelevant -- you first need to understand fundamental photography constructs.

Search google for any number of online tutorials and videos. Go to your local bookstore/library and buy or rent introductory photography books, etc.

If you want to understand how to adjust your camera, you need to have a working knowledge of the basic language of photography.

Or, just throw all that out the window, put the camera on "Auto" and spray and pray.