If you just started RuneScape maybe 30 minutes and if you already have a RuneScape account 7 minutes minimum.
I asume u mean turtorial island and the answer is no. In the new version of Runescape, you may skip the tutorial. In the upper left window with the stages, quests, etc. just click the x. Then you can continue the game. I recommend following the tutorial until you reach the profession you plan on doing. If you aren't sure about the skill you want to 99, you can get an idea from the tutorial. I wouldn't do it all though, it is extraordinarily long.
It depends how long you are on Runescape.
An object named as an Island is usually just that, "an island". However you have not been specific regarding what long island you are referring to see:- http://en.wikipedia.org/wiki/Long_Island_(disambiguation)
They are typically not any more than a mile and a half long, and a mile wide. A cay is usually elevated in the center of the island, and usually have palm trees on the island.
Part of New York City (Brooklyn and Queens) are actually on Long Island. Usually people mean the other, less urban parts of the island when they refer to Long island, but even from there all you have to do is step over the city line.
usually a few weeks, it depends if you have enough money to continue buying supplys
as long as your java is of a new version, runescape should work fine.
Holiday events usually come out 2 weeks before the holiday and last another 1 week after the holiday ends, hope that helps :)
long description, use youtube for a video tutorial
There is no day/night cycle in RuneScape, as there is in some other days.
That depends on how long it has been used. Usually a barrow item set corrupts after being used for a while.
20 minutes.