Hope you are still checking in.
Good on you Busiboy for finding this post, 84 views is a bit poor.
I must confess I did see this one, probably when it first posted and I passed on it that time thinking someone else could better answer the Nikon related questions.
But I should have at least said hello, welcome.
As Busiboy said it just takes an influx of posts and you can disappear off the radar and get forgotten.
You have mixed an introduction with three questions, each question would be better with its own thread because to answer them well to someone starting out takes some careful explaining.
But here are some brief answers:
I purchased a Nikon D3100 with twin lens kit and was wondering what is best to shoot with being the 18-55 or the 55-200 lens.
You are going to find both useful for landscape, if you do more wide stuff the the 18-55 is going to end up the default lens most likely.
Don't assume landscape is all about wide angle though. The longer lenses ability to give the impression of compressed depth in a picture and to give close and distant object more equal weight in a composition is very effective , so expect to do a bit of swapping between the lenses.
Also any suggestions on a good lens for further down the road once I learn the basics.
Kit lenses are very versatile particularly in landscape applications so learn the basics first and worry about additional lenses later.
Experience, need and specialization will dictate to you what to get then.
And last but not least what should I be kitted out with eg. Lenses, filters, tripod and what not? Any advice will be greatly appreciated anks in advance
Definitely a tripod and as good as you can afford is usually the way to go. A flimsy one just does not do the job, and a good one can be a long term investment (I've had mine for maybe 30 yrs). Get a shutter release so you are not waiting on a camera timer (cheap will do).
I don't go in for filters much so I'll leave that for someone else to make suggestions.