Sump

[Chase31]

so purchasing a 10 gallon tank on Kijiji as my first sump ever and i dont think it has baffles so im going to have to put my own in,
1. were do you buy acrylic , home depot or is it better to go to aquarium illusions?
2. is glass better then acrylic
3. aquarium silicone, same thing, home depot or LFS
4. does the intake need is own separate area (like two in the corner to make a little square?
5. how do i know how high to make the baffles
6. does the high side go on the intake or outake side of the bubble trap?

sorry for all the questions but mise well have them all in one :P