Hey people,I'm a spring chicken in my 70th year so please.....be gentle with me ??. I need to put new steps on my patio, wooden pre-cut sets at Bunnings look good but I don't know how to select the correct ones. What do I measure, what angle from the patio should they be,and what distance should be between each step? Also, how should the side supports be secured to the ground,if at all. Just learning the computer too so can't put up pictures yet. Sorry about that....and thanks in advance for any advice.