I have been using this forum only since four days. Though I dont know Arabic I find the writings very artistic. How long does it take to learn Arabic?

Learning how to write Arabic is not difficult. Lettersare are only28:

أ ب ت ث ج ح خ د ذ ر ز س ش ص ض ط ظ ع غ ف ق ك ل م ن ه و ي

The second step as Mariam mentioned above depends on your efforts and interest.

Well, welcome first to this siteand, secondly learning any language depends on the person whether he is interesting or not, or if he is willing to learn as possible as he can or notIf you want to achieve somethingyou have to work hard. And if you love something don't let anything stop you from reach itgood luck :)