I have my head off now I need to change my valves how do I do it?
It can be different from car to car, look up tutorial's on google and youtube for your specific car
you need a valve spring compressor then basically compress the spring remove the keepers the valve will slide right out but the keepers should never be reused and if you dont know what your doing then i would refrain from taking it apart and have a mechanic do it
What I would do is just take the heads to an automotive machine shop and have a valve job done on them. They will do everything, grind and resurface the head and valve seats. This is the smart way to DIY. Do what you can do well yourself and let those with the proper tools training and expertise do what they do best. You'll save money this way and get the best work done at the best price.
The valves may not just slide right out. The keeper sometimes form a bit of a ridge on the valve.You need to remove that little ridge first if they don't just slide out. After they are out the guides may need work to achieve proper fit and centering of the valves. The valve seats may also need to be ground. Most of the time it is easiest to take the head to a machine shop for the valve work.
