Yule is 12 days (traditionally in a modern sense, not a historical one. We have evidence of Yule lasting an entire month in several regions), and starts with Mothers Night which is rooted in Anglo-Saxons with heavy evidence of coming from the continent. Yule historically had different lengths and different "start times" depending on the area, agricultural practices, etc. It was always after all the work was done.
Almost all of the modern traditions (not holiday. Traditions) come from the Germanic. The yule log, the ham (Freyr), the oat hing at New Years Eve (12Th night), the feasting and some argue the tree (based on houses being built around trees that were considered lucky to the family or land).
Most people start Yule at sunset on the night of the 20Th,(NOT Solstice) ending on 12Th Night as New Years Eve. The 12 days is generally spent with family, friends with family and gifting (which was important socially), leaving lots of offerings for ones ancestors and the elves and to the gods. There is a lot of baking and cooking and eating and celebrating the year that's passed and talking about the year to come.
I'm in a kindred but we generally only do Mothers Night and 12Th Night together. The rest is spent with my family (I'm actually not supposed to be on line right now but the kids are out cold and I'm bored he he) and sharing ridiculous stories of the years that have passed and making plans for the year to come. Last night the women in my family got bored and started baking an apple cake and shortbread and we laughed and said nothing is more Christmasy than baking copious amounts of food for no reason other than to gather in the center of the house hold. We've eaten half that cake so far too
There are little to no real "rituals" in Asatru other than the sumble (which is NOT the same as a blot which is NOT the same as an offering). As long as your focusing on family and community in your actions and deeds then your doing ok.