The entirety of what we are able to reconstruct from literary accounts concerning Anglo-Saxon paganism wouldnt be enough to fill an answer that would be acceptable on this subreddit to be quite honest. There are a few off hand mentions in Bede's writings that, if we take them at face value, indicate a heirarchal religion dominated by a priestly class, with set festivals around the year such as November being designated as a sacrifice month, and that temples to the gods were constructed, in one case involving an altar to Christ alongside other idols. If this sounds disappointingly light on details, well welcome to the disappointed club.

If we go farther back in Germanic history we get to Tacitus's Germania which is only scantily more reliable. While lacking the evident distaste for heathen beliefs that Bede exhibited, Tacitus is not substantially more reliable. He gives us some glimpses at processions of idols, human sacrifice, the significance of horses, and a few explicit mentions of deities.

If you're inclined to look to Norse sources to fill in the gaps, allow me to disabuse you of such a notion. The sagas and other works that compose "Norse mythology" all date to after conversion to Christianity in the 11th century, and were written even later than that. So if you're looking for written sources on religion in Northern Europe in the even earlier iron age, you will be disappointed. I'm happy to elaborate on the sources I've mentioned or discuss archaeology and the evidence we can get from it, I'm happy to do so.