I'm sorry if this question is not on topic. I am moving from Windows to Linux and had the idea to use a bootable Linux Mint external SSD to slowly download and integrate all the software I use, while at the same time using Windows as my daily driver. Once I am comfortable with Linux, I will then discard windows and use Linux Mint as my daily driver.
I will then need to clone the bootable Linux Mint on to my main SSD. Would Clonezilla allow me to clone the bootable SSD on to my main SSD and use the rest of the allocated space on my drive as free space for Linux Mint?
discard windowsthe OP may need to perform the worst -- moving a partition, in order to use the regained space flexibly. (While reinstalling Linux takes much less effort and time when compared with Windows, it doesn't mean that it is necessarily easy / won't be a hassle, especially for newbs.)