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.

I practice attachment parenting. Babies are used to constantly being close to their Mummies when they were in their wombs. They are not used to the feeling of being detached from their Mummies and that can cause a fair bit of insecurity, which cause them to cry as that's their only form of communication. For a baby to stop crying, their basic needs (ie. food, diaper, sleep, security) have to be met first. You're not spoiling your baby by carrying, for they are not manipulative at this age, they're only asking for some comfort from their closest one - You. Hang on there Mummy, it's not easy initially but it'll definitely get better. :)