Just wondering cuz im gonna b attaching another dyrer hose to my regular hose to create more vent out the crizz...but i dont have an idea where to begin> good lookin in advance.......

It ain't rocket science, I know that ain't what you want to hear, but a vent is a vent, add a "Y" connector to your hose and you are done. If you want to do complex formulas out of the book, you probably can, but when you get to the store they will probably only carry 4 inch stuff so all you calculations will be a waste of time. If you get lucky the store will have 4 inch and 6 inch stuff and then you can double your choices. In the world of HVAC that is what you are going to find, unless you are a certified dealer and ordering in company specific stuff.

If you know absolutely nothing and need the basics go and get a time life book on plumbing or borrow one from the library.

ya my dryer hose for my house has a black plastic lining on it and i dont wanna jack it up. oh well. ill have to take a closer loot at it. thx. pce