[JennLyn6]

how would you go about to create a buffer system?

Edit: edited title for better indexing. Mitch

[Mitch]

Do you want an equation or just a rough description?

[Donaldson Tan]

a buffer can be created by mixing a weak acid with a strong base, or a strong acid with a weak base. The later is not favoured, cuz typically the working range of most pH indicators will not fall into the buffer system's range  

[JennLyn6]

thank you for your reply, i would like a description please

[GCT]

First you need to know the pH of the system you wish to create.  Find a conjugate base/acid which (dually weak) with a suitable pKa, you should easily be able to find a list of these in a standard chem book.  Use the henderson hasselbach equation (look it up if you do not know what I am talking about) to find the relative concentration of buffer acid and base.