Is it true that I could spoil my baby by picking him up every time he cries? It just gets frustrating when he keeps crying.

It won't spoil him, but yes, he would over the period of time know that this trick can get him in your arms. Since, they are new to the world, they find the most comfort being close to you, being in your arms, and this is the place they are most familiar to, as you feed the kid. So, whenever you lift the baby, he feels secure. Like when we sleep and keep tossing till the time, we get the perfect posture and pillow seeing and all, same is with the baby. He cries till the time, he gets the best seeing for sleeping.