How to organise Lightroom catalogue, in such a way that the catalogue can be used on another comput

Question

how to organise(and save) Lightroom catalogue, in such a way that the catalogue can be used on another computer? / so you can see what has been edited etc. /

Answer 1

Yes, but external disks will always be slower than internal drives.
Look into file synchronization software. As long as folder structure is identical inside the two master folders, and drive letters the same, you can keep the two machines fully synchronized very easily, going both ways. The one I use cost about $50 or so.
Use a large capacity 2,5" portable (goes in your pocket) for transport. You need the entire master folder there, but once set up only new or modified files are copied.
The Lightroom catalog can be synchronized with the rest, so that you are working with the same catalog on both machines. This overwrites the catalog with a new copy every time, so a regular backup schedule in addition is a must. OTOH you will have three copies of every file, one always off-site. That's sound backup practice.
Tip: exclude the Lr Previews folder from the synchronization. They are written to disk in such a way that they take an insanely long time to copy. New previews will be built on the receiving machine.