This is the Campaigns of Alexander, by Arrian, an ancient source on Alexander, but a secondary source because he was a Greek who lived during Roman times.
In a couple of sources it mentions that on alexanders date of birth a temple burnt down. a powerful symbol and great publicity for alexander (to add to his long line of related gods). this source simply corroborates this.
This site is not particullarly reliable, it is more of a third party website made by someone who wants to provide information on Alexander the Great. What it useful about it is it's bibliography, it provides a lot of information on the sources on Alexander. I would recomend using this to find out who the sources are, and then try to research further into them.
This is a good source for the background of arrian, to help with source evaluation. even though it is wikipedia it is still good for source evaluation.
A transalated version of the primary source, Tukulti-Ninurta 1 Epic, the website may not be very reliable, but the information should be accurate if it is a copy.
This does not provide much of Tukulti-Ninurta I's Epic as A. Kuhrt's book, the 'Ancient Near East C. 3000-330 B.C' says that the Epic is 700 lines long.
A transalated version of the primary source, Tukulti-Ninurta 1 Epic, the website may not be very reliable, but the information should be accurate if it is a copy.
Home page for Skip Knox's essay on Alexander the Great. This source is reliable as it is and education websiter shown through the (.edu) It has alot of helpful hyperlinks so that you can pick what you want to read about on Alexander or the people related to him.