Howdy! I too am new but enjoying tinycore.
I have had no problems creating bootable USB sicks from my Win 7 both with just the tinycore ISO and Rufus.
There is almost no difference between the portable and the non portable. The portable recalls it's previous settings if you use it on a lot of computes.
All of my devices boot just fine and dandy with the rufus defaults. Select the USB stick, select the ISO and click the start button. Accept any defaults it asks you about after that.
I have not had to copy or rename any files manually.
I use tinycore-current and it starts with the GUI desktop. From there I can run the software installer and get the gui flavor of tc-install, which also happens to depend on the command line version, so if you pick the gui flavor you get them both. I have found the cloud install to be less typing but I have had success installing both from the cloud and the running system.
Getting the OS onto the hard disk and booting to the command line is easy. I have completed a couple long term projects with tinycore frugal and I am really very happy with it. Small, and fast.
That being said, I have had no luck getting anything like X going on it. I would like to install the desktop that comes with tinycore-current.
I have tried pointing tc-install at optional stuff from the USB stick in the last step when it asks aout optional stuff. I have never had that work. I have tried copying the contents of the USB over to the hdd after the install, and never had that work.
Can someone please give me a quick synopsis of what you need to do to install the GUI from the tinycore-current iso on a frugal install?
And, as an aside, it would be cool to have the installer give you the option of the GUI like the tinycore-current has, or the frugal version like core-current.