How to adjust my timing chain.

Your car has what is called a variable valve timing tensioner. It automatically adjust your chain tension. If the chain is off its gears than that is a bad sign. Could have stripped a cam gear. Also you have a timing beltthat joins the vvt set to the crank. If you havent ever done a vvt chain and belt set then this is a job for a shop. Not saying you cant do it with a little reseach some time and a lot of patients getting everything lined back up. But this is def not a novice job