Figure out your end game. Restoration has different meanings for differnt people.

are you going to make it rideable, cleaning, lubing and replace cables, housing tires etc

Do you want to make it look brand new?

Do you want it 100% period correct

Do you care about value, Is it a significant, super rare, etc bike.....best to do minimal changes....

are you you going to take and old bike and put new components on it?

let the end goal guide you...

get the right tools

if you think you will be doing this a lot get a quality bike stand

have fun