The question is waaay too vague, man. Keep them under lights.. water them well.. use good nutrients and quality soil.. what are you looking for here? Follow some grow journals on here if this is your first time growing. Read them all the way and see what it's like. There are hundreds / thousands of things you can do to keep your plants healthy.
Bottom line, though, if you have to ask this, you aren't learned enough to even attempt growing something as coveted as grape ape. I'd have started with an easier strain, personally.