To answer your query properly, we'll need more information...
What wallet do you currently have?
Do you have an Electrum "cold storage" setup already configured with one "offline" (air-gapped) PC and one "online" PC?
Do you just have a "standard" online Elecrum install on one PC? or are you using a completely different wallet and want to migrate to using Electrum?
Also, not as important, but useful information would be the Operating System you are using (and or any mobile devices you're wanting to use).