Edouard Manet is known as an impressionist, though he did not personally consider himself as one, he painted 'en plein air', in other words outside. in comparison to works of the old masters at that...
His first painting of museum quality was
'The Absinthe Drinker'. 1858-1859.
At Ny Carlsberg-Glyptotek, Copenhagen, Denmark
What he painted before turning profesional nobody knows.