It is very easy and I want to explain it using a simple way.
Always go after verb to be.
Always go before all verbs least verb to be.
I think it is better explain with examples as you have seen in my before answers, so, let's go:
"I am always at home"
"I always try to answer the Rioko's questions"
"Do you always go to church in the morning?"
"He is always so nice"
"I can always help you"
Always can be replaced by other frecuency adverbs as:
usually, sometimes, rarely, hardly ever, never.
I put them in order of frecuency.