Are there any applications on the mac which would allow me to burn my ubuntu iso to a USB stick (I am not good at terminal.) Also, is there any way to make sure that a bootable stick created on the mac is usable on windows? Lastly, I only have a 1.87 GB stick. Will this be enough to hold ubuntu? I can also use a larger stick (8.00 GB) if the other one is not sufficient.
You can use the built in 'Disk Utility'.
Yes, around 1gb is more than enough for a typical Ubuntu live disc.
Sorry for the lack of screenshots, I no longer own a mac.