Hello, I am trying to get into amateur astronomy but first I have to understand the sky. Because of the tilt of the earth, there is more than half the surface area of the earth radiated by the sun's rays and therefore those areas which are on the hemisphere of more sunlight have longer days. Also using the model of the sun at the centre and earth revolving round it, the concept of seasons is clear. My problem with the celestial sphere concept is I cannot use it to explain everything that I already know about the sun's position on the sky, how the sun changes its position from summer to winter. I am not even sure if I know if the the depiction of the path of the sun on the celestial sphere is the path on a given day or a year. As you can see I am confused and most sites I visit just define stuff without giving reasons or addition information such as how the path of the sun on the celestial sphere is constructed, how the celestial sphere changes throughout the year etc. Please explain if you can or direct me to some resource which thoroughly explains the concept, not just a site with definitions. Thanks.