Before using ps do a lot of posters, this method for AI quickly create posters for everyone to talk about it, or follow the more popular the last two years gradient, the effect quickly a few minutes, take a look at renderings:
The first step, this poster size all of you, we will start with the circle tool to draw a circle, then hold down the alt key while dragging a copy to the right circle, then ctrl + dddddddd continuous replication in a row, copy down it is the same method: 
the second step, next to the arranged dots are combined, and then dragged into the set of the dot symbol palette, you name it freely: 
then use the tool to draw a great circle oval, white arrows left select anchor, click delete, the remaining half of the round, then ctrl + j will anchor off the connection: 
step, Next, choose effect -3d- revolving pop-up window, check the preview for easy viewing, and then select the button drawing stick, we just find new dot Configuration:
The fourth step, after finding our new symbol, hold down the shift key to zoom ratio, etc., and then check the three-dimensional model is not visible, point to wave to adjust as you see fit location, click OK after adjusting the end, we can use drag the mouse to adjust the angle of the square you want:
We want to adjust the angle of post, select the graphic, choose Object - Expand Appearance, then right to cancel grouping (grouping several times more than canceled), the final shape of the excess Delete: 
The fifth step, the resulting gradient graphic click, double-click slider to change the color of the gradient, here I am free to adjust the two colors, we can follow their own preferences:
The last change to a dark canvas, accompanied by appropriate text, a poster is complete:
(This article was written by the original source era technology teacher, please indicate the source)