bubble1, you should read this : https://electrum.readthedocs.io/en/latest/coldstorage.html

I think the whole process is explained in a fairly understandable way, even for beginners. The point is, if you really want cold storage, then this new laptop should never get internet access. Usually people use older PCs/laptops for cold storage, and new computers for watch-only wallets for a broadcast transactions. I never go in that direction, hardware wallet is a much cheaper option - although it must be admitted that properly made cold storage has an even greater level of protection.