Travel Cost of travelling to Japan for about two weeks?

So, I am planning on doing a Year in Asia exchange program at university in about three years but I want to travel to Japan first as I want to get a feel for it before I commit. I honestly love so many things about Japan but I want to know how everything works before I get over there and find out I have absolutely no idea how to use a train ticket machine ^_^;; so if you've travelled there before for two weeks or anything like that, please share your experiences!! thank you for reading my post >///< ありがとうございました‼︎ 未来夢!!

Here's an existing thread that might be useful for you.
Travel - Female Solo Travel | Japan Forum

I think you'll probably get a better response if you ask specific questions.

I travelled to Japan for two weeks during Summer 2015. The money I spent whilst in Japan was roughly £600 (maybe a little more). I didn't go on big shopping sprees, but did eat out everyday in decent restaurants.

The route I took was Tokyo,Hakone,Kyoto,Hiroshima, Osaka. I purchased a Japan rail pass which was worth the money.

I stayed in 3*/4* hotels in city centre locations and travelled at a peak summer time, during Obon week.

The total cost of my trip was pretty high to be honest, as I also had a travel company arrange things. But I dont regret it as Japan was a brilliant country to travel in!

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I think women tend to spend a bit more than men, but I think this estimate is fair:
- hostel: 3000 yen per night
- hotel: 5000 - 8000 yen per night
- 3000 yen per day on food and drinks (less is certainly possible, but this would give you lots of options)
- transport within Tokyo: 1000 yen per day (unlimited) or 500 if you just go from A to B and back
- 1 week rail pass 30.000 yen, if you plan on spontaneously traveling around a bit. You could also take LCC flights for about 5000 - 8000 per leg.

Add cost of flight and shopping money, and there you are.

My first trip to Japan in 2009 cost me about about €930 for the flight which was direct from Munich. I stayed half of the time in a Ryokan in the Nagano area for about €590 all inclusive and the other half in a business hotel in Shinjuku for about €46/night.
For souvenirs and food (almost exclusively restaurants) and other shopping I spent about €600 during my time in Tokyo.
Since then I went three more trips, ranging from 10 to 30 days. I had one-stop flights for between 500 and 630 Euro and spent less than €500 every time, because I was able to stay at a Japanese family for free. So if you have any friends living in Japan, this may be an option to lower your expenses tremendously.

How to buy and use tickets.
Taking the train in Japan