I'm not sure I understand what you mean, but there is documentation for Nivo slider here: http://docs.dev7studios.com/jquery-plugins/nivo-slider If you follow that step by step carefully you will have it working in no time.
Your question is very broad if you could provide more details myself or other fellow forum members will be willing to help you out.
In general you have a couple ways to do it. Assuming you have a fixed page for home rather than a page that displays your latest articles, you copy single.php template, rename it (along with the name inside the code) and modify it to display the slider, then select it as the template for your homepage. Should usually run about $70 or less for someone to do this for you. Alternatively you can add a widget area to your homepage template and then add a widget with the slider to that area. (around the same cost). You can Googlle create custom Wordpress template if you want to do this yourself.
Tip: don't. Sliders are a horrible waste of bandwidth. Nobody likes them except executive imbeciles who think marketing is the pinnacle of human existence. There are dozens of better ways to show your content without resorting to horrible rubbish like sliders.
TIEro.. you are 100% right about bandwidth, that's why comSlider is the best solution, their slideshows are hosted in google cloud platform and you just embed the snippet code into your web page
No, they still chew up bandwidth for the people connecting. Gigabit wifi does not exist in every place in every country in the world. What about your visitors on cheap mobile connections running at dialup speed? Bad idea. Horrible things. They serve no purpose other than on portfolio sites, which are horribly heavy and full of artsy stuff anyway, so people expect them to take forever to load.
So that is why the AJAX was invented and every advanced slider (inc. comSlider) loads images on demand... (just initial image is loaded when the page is fully loaded)
And still chews up tons of unnecessary bandwidth. You're missing the point here: sliders are a waste of space, time and bandwidth. I can honestly say that in 2013, I must have clicked a slider-promoted piece of content ONCE. Maybe twice. Think of all that screen real estate you're wasting, that could be used for something useful instead. A big image is downloaded instead of, what, eight or ten thumbnails for the same number of kbs? Sliders are just a waste and I'll be glad when the fad passes and we can go back to having interesting things on the screen instead of sliding images that do nothing except get in the way. Their only use is on a dedicated "slideshow" where the user knows what they're getting. That way they only load images instead of the whole page at any time and are an effective tool. Purely my opinion, of course, but they're as bad as full-screen landing pages with just an image and a "Click here to enter" button. Remember those from the 90s?
Worse, they pretty much by definition saddle you with a fixed width layout; the antithesis of accessible design, particularly in the modern world of responsive layout. For over a decade we've been told elastic and semi-fluid, elastic and semi-fluid, and now the next logical step is responsive -- and a massive fixed width bandwidth hogging train-wreck usually isn't all that compatible with any of those!
There are a lot of slider on internet in free . You can download it. And implement in your own website. What kind of slider you want to use in your website. I use Nevo, jcarousellite and wowslider. These all are working in my website. You need to download it with all documents.