On Monday, 16 March 2020 14:28:26 UTC, John wrote:
Thanks very helpful.
So....
1. Buy an external HDD holder from Amazon for £7 or so.
2. Put a new SSD in that.
3. Plug it into the USB port.
4. Ensure the SSD is formatted.

reformat it as ext3, not a windows format
Linux wants 2 partitions, one for swap space, one for everything else. 4G of swap should be more than you'll ever need.