Yule never was really "celebrated". It was more a time of resting, keeping warm and fed, during Winter, and waiting for the Spring.
In old times there would be a fire, of course.And a Yule log. This was the trunk of a tree, about fifteen feet long, and about 9 inches or so in diameter. It was meant to burn for twelve days, being "fed" into the fire a little each day. (It is where we get the tradition of the twelve days of Christmas from!). In the old days there would have been much eating and drinking, not so much a "celebration", but a time of not doing very much! Yule, these days of course,is very much mixed up with Christmas, even though it comes earlier.
I would say that if you sit by a fire, and drink a hot toddy, you would be "celebrating" Yule.