AuthenticStatements.com is an excellent resource for Islamic knowledge. According to their 'about us' page,
Authentic Statements was primarily established to introduce the Muslims to the scholars of Ahlus-Sunnah and the popular speakers who follow them in knowledge by way of both audio and visual materials.With the Muslims in the west in mind, it is our intention to bridge the gap, which more often than not is no more than a language barrier, with those who invite to Allâh with wisdom and insightful preaching.
I regularly get email updates from the site, and today I received an email with a link to the first of their new monthly newsletter. The topic of the newsletter is very fitting for this time of year and I wanted to share it with my brothers and sisters in hopes that you can benefit from it as well. I'll copy a small excerpt from it to get your started, and please click here for the full PDF newsletter.
There is no doubt that Allah the Glorified and Most High legislated two holidays for the Muslims in which they gather together for remembrance of Allah and prayer, which are Eidul-Fitr and Adha, (given as) a replacement for the pre-Islamic celebrations. He also legislated(other) holidays which include types of remembrance and worship such as Friday, the day of Arafah, and the days of Tashreeq (11th, 12th, and 13th of Thul-Hijjah) and did not legislate Christmas, (a birthday celebration) neither for the prophet (salla Allahualaihi wa sallam) or anyone else and the textual evidence from both the Book and prophetic Traditions demonstrate that these birthday celebrations are innovations in the religion and a form of imitating those that oppose Allah