can anyone tell me what exactly is electrolosis how does it clean metal when conneted to the cathode

That will require some basic redox reaction theory. Read up on that

 

Basically: it reverts the oxidation reaction by stuffing the metal with electrons.

Edited October 23, 200916 yr by Fuzzwood
Wrong smiley

thank you for replying so in other words its eletric shocks the metal connected and 1 more thing can can vinegar or any household alkali/acid be used as a electrolyte to improve eletric conductivity

Vinegar would be a good choice. But use clear vinegar, not the ones with coloring additives and stuff. Try connecting a graphite electrode to the anode and a rusted piece of iron to the kathode. Apply a small voltage and see the rust literally fall off .

is the cathode negative and is the anode -

is washing up liquid good as a electrolyte because i think it has anions

It has both. All ionic solutions have a neutral charge in the end.