how do I buy os$

[Zambooya]

how do i buy os$

 

[Lindal Kidd]

Do you mean Linden Dollars ($L)?  See this link: https://community.secondlife.com/t5/English-Knowledge-Base/Buying-and-selling-Linden-dollars/ta-p/700107

Or do you mean the grid currency for OSGrid?  OSGrid is a different virtual world...it's similar to Second Life, but much smaller.  I have an account there, but on visiting their website, I was unable to find any mention of a currency system.  OSGrid has the advantage that, if you host region(s) on your own machine, you can have land there for free.  However, the number of residents is MUCH smaller than SL...when I was on their website, it said that the total people in world was 58.  OSGrid operates mostly on donations from users to keep their common servers running.

[Amethyst Jetaime]

OS$ is a currency that is used on a number of Open Sim grids.  If they sell them, they'll be on the website for the particular grid your on.  They are not interchangable from one grid to another.