Which should be my new Nikon DSLR camera? - 1

My uncle let me borrow his Nikon D700 camera for the summer with a really good lens, the 70-200mm 2.8-5. Something. I love how I can manually change the iso and aperture quicker than those beginner level cameras. Then my uncle bought a better camera and let me have his D700. I am thinking about selling the D700. If I do, my budget for a new camera would be 1200 dollars. Just for an upgrade and new model. I would also want a new lens included in that budget because I have my 70-200mm back to my uncle:/

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Should I sell my outdated DSLR?

Should I sell my outdated DSLR?
Added (1). Model is Nikon D60. It's been out since 2008 or 2010.

My aunt (who initially owns this camera) gave this to me during the year 2012 and we weren't using it much since then.

Now, I want to practice photography but I want to use updated an updated DSLR.
Added (2). *use an updated DSLR.

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What Should be My Next Nikon Lens?

Hi there! Im abran, My uncle got me into Photography a year back, when I was a freshman in High School, And since then, I kept liking it. I First Used a Canon 600D with 18-55 kit lens, and Currently Im using. A nikon d7100 with 18-140 VR lens. I bought this camera a few months back, Im still learning though. I have saved up around $500 for a new lens ( It dosent have to be $500 exactly ) I mean I cant spend more than 500 on a lens. I like to shoot Landscape more, rather than portraits. Few of my friends suggested me to get the Nikon 35mm/50mm prime lens, But im not sure if it will be a good idea, because Mostly primes are for portraits. I do capture portraits too, but not always. Someone who has experience in Photography would be a little helpful to decide what kind of lens I should Get.

This is my album in my Facebook: https://www.facebook.com/abran.tasrif/albums/639887112690124/

To show what type of pictures I take.
*Please dont judge my photos, Im just a beginner*

Thank you for your attention:)

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Are Sigma lenses good?

Im thinking about buying a Nikon D3300 w/ 18-55mm lens,

http://www.dirtcheapcameras.com.au/nikon-d3300-digital-slr-body-red.html

Are the lens that come with the camera better or worse than these:

https://www.jbhifi.com.au/cameras/Lenses/sigma/sigma-70-300mm-f4-5-6-dg-macro-telephoto-lens-nikon-mount/440413/

I will mostly be taking pictures of buildings, landscapes, nature scenes, close ups and general pictures.

Thanks
Added (1). Or would this be better:

https://www.kogan.com/au/buy/nikon-af-70-300mm-f456g-lens/

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What canon film camera should I purchase?

I'm a newbie film user, & I would like to invest in a worthwhile film camera! I would appreciate the input. Price would have to be less than $250.

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