Reaction force of ladder against wall

[cream_pepe]

A ladder of 6m long rests along a smooth wall at 25" from the wall. The floor on which the ladder rests is rough. Standing half way up the ladder is a woman of mass 75kg. Assuming the ladder does not slip. Determine by graphical solution

a. The reaction between the ladder and the wall.
b. The reaction of the floor and the ladder.

Basically I don't know where to even start. Does anyone know a good page that explains this topic? I would be very grateful if someone could provide a solution, but I know that's too much to ask. Thank you very much for your time.

 

[willem2]

determine all the forces that affect the ladder.

Since the ladder doesn't move the horizontal and vertical components of these forces have to cancel as well as the torque around any axis