Harddrive space

I wont be able to use Blender for a long time, as i only got 4.5 GB disk space out of 237 GB on my SSD

Is there any way you can get a USB flash drive? If so, you can download the zip file onto the flash drive and extract it and then run Blender from there (no need to install). And with the space left over, you can save your .blend files on that same flash drive.