This is far simpler than you think. There are two different patterns to learn. "Used to [verb]" means this was a habit in the past. "I used to walk a lot." "Be/get used to [noun]" is a different pattern. It means something was not familiar or comfortable at first, but that changed (be) or is changing (get). You can use this pattern in any tense because the get/be verb changes. Use a gerund if it's an action. "I'll get used to walking a lot." "I was used to walking a lot." "I'm getting used to walking a lot." "I am used to walking a lot."

To "used to" do something means that you would regularly do something in the past, but not necessarily do it now. eg: "I used to go out and party every weekend, but now I have to sit down and study." "I used to chew my nails when I was younger, but mum would slap my wrists whenever I did." To be used to means to be accustomed to something. "I am used to writing with my right hand, I couldn't possibly change to my left hand now!" "Tom, you are too used to being spoiled by your parents. It's time you go out and earn your own money." To get used to is the process of becoming accustomed to something, "I got used to my stepfather now that he's moved in with my mother." "I am still getting used to this job at the bank. I know nothing about finance!"

i used to walk my dog three times a day. i don't any more. now i only walk him twice a day. "used to" means it was a habit/routine but now it isn't. (past tense) he is used to the hot weather. he is often in hot weather so it doesn't bother him. for him it is normal. "to be used to something" means it is normal, regular, typical for someone she must get used to reading on a screen. all her life she has only read books or papers, but now she has to read books on her computer. she should get used to it in a few weeks. "to get used to something" means to adapt. (something is difficult at first, but after more exposure, it becomes normal/typical/regular) whew!! hope that helps :)

"used to" can have two meanings. (1) It can express a repeated or habitual action when followed by another verb. "I used to go fishing twice a month." (2) to be accustomed to something; something is familiar to you because you have experienced it before. "I'm used to noise, because my neighbor plays the trumpet every night between midnight and 1 a.m.!" "to be used to" is the same as the second meaning of "used to" "to get used to" is the process of becoming accustomed to someone or to something. "If you want to learn a foreign language, you have to get used to making mistakes." For more explanation and sample sentences, please look here: http://www.macmillandictionary.com/us/dictionary/american/used-to