First question... Is your nursing degree two or four years? Associates are no longer considered valid education in Canada. You must have a four year degree to work as a LPN.
You and your husband need to determine how you will be eligible to immigrate to Canada. You can't just move here although you can visit (no working) for six months at a time.
If you have a bachelors of nursing, you can look into finding a nursing job. There are some areas, usually remote, that would consider an American nurse.
Here is the eligibility tool (I hope this link works as my copy/pasting while using my phone is wonky!)http://www.cic.gc.ca/app/ctcvac/english/index
There are plenty of Americans on this board and several of us live in Alberta, so you should be able to get advice and help. If you aren't prepared for everything to cost more, up to 30%, prices will be a shock. However, first you need to determine if you're eligible to come to Canada beyond visitor. Americans are treated like any other immigrant. We can't just move here and get a job. You're moving to a different country, not state. I think we take that for granted sometimes... Americans and Canadians.
If you're confused about the nursing requirements, call a university and ask for an international advisor. If you call Mt. Royal in Calgary, ask for Wendy Mayer. She knows a lot about the nursing - she's the one that told me about it. (My ex-husband is/was a nurse. Only reason I know!) ibelieve she works in the registrars office. Definitely call as Mt. Royal staff are really (extremely) crappy about replying to emails. (Okay they suck and aren't getting another dime from me!)http://www.mtroyal.ca/AcademicSupport/StudentRegistrationRecords/ContactUs/index.htm