Short answers, pulled from the story.
Alexander I of Russia was born at 10:45 on the 23rd of December 1777 inside the Winter Palace in Saint Petersburg. His mother Sophie Dorothea of Württemberg held him while his grandmother Catherine the Great watched from across the room.
Swiss tutor Frédéric-César de La Harpe introduced young Alexander to Rousseau's philosophy about human nature while Orthodox priest Andrey Afanasyevich Samborsky taught him English and traditional Russian faith. The boy walked a tightrope between two worlds that seemed incompatible with each other.
Paul I was assassinated on the 23rd of March 1801, which allowed twenty-three-year-old Alexander to stand inside Saint Michael's Castle as General Nicholas Zubov announced his accession to the throne. Historians still debate whether Alexander knew about the conspiracy beforehand or if he simply refused to stop it.
Three existing universities at Moscow, Vilna, and Dorpat received strengthening while three new ones opened at Saint Petersburg, Kharkiv, and Kazan. Literary and scientific bodies flourished under imperial patronage until foreign scholars later got expelled when education became more religiously driven.
Napoleon invaded Russia during summer of 1812 with Grande Armée numbering over half a million soldiers. On September 7th, the two armies clashed near Borodino west of Moscow involving more than 250,000 soldiers total yet remained inconclusive since Russian army withdrew undefeated despite heavy losses.
Alexander I died in southern city Taganrog on November 19th Old Style though news capital did not reach until December. His body transported Saint Petersburg funeral interred Saints Peter Paul Cathedral Peter Paul Fortress the 13th of March 1826 while popular legend claims Tsar faked death living hermit name Feodor Kuzmich theory often resurrected popular writers.