It will be difficult to use Blaze and Vue in the same project. Specially if you use nested route or parameters on the route. It’s recommended to use vue-router, and this router will have issues with Blaze in this way.
It’s best to start green field with meteor + vue and you can get started by using this install instructions: Basics: Setting up a Meteor + VueJS project. If you have to mix, you should wait for this initiative to take off: Vue as the base of Blaze 2.0.
I have a sister application that is all Blaze and uses Accounts. This new system will be only Meteor + VueJS. They’ll both use the same MongoDB. I’ll need to tie the VueJS system into the Accounts system, which will require custom calls to Accounts, and of course we’ll need to add custom forms for login.
In another VueJS thread there is a reference to using Accounts with VueJS I think (can’t find the link ATM). But we should collaborate on this effort to help one another and others that come behind us – we’re trail “blazing” here. 
Once I get to it, I’ll post a repo of what I’m working on in this area if there’s not already something out there.