Assuming this is a fresh install and you probably don't have anything important on your system yet...
... why don't you just *re-install*?
I notice you also posted here
. Frankly, I wouldn't advise trying to debug "grub" or your fstab list at this point in your Linux Education. If at all possible, I'd just reinstall.
Someday - perhaps even someday soon - you might find this problem easy to troubleshoot and resolve. But I think today, it would just cause frustration.