Before starting the immigration process

[OMRI]

1-I'm 40 years, my wife is 31 years, and my daughter is 4 years.
              -Is it too late for me to start the immigration process?
              -Is it possible for me and my wife to find job in Canada even with my age?
              -Are there limits for age to work in Canada?

2-I have a good experience in teaching mechanical and industrial engineering in the university and College and Other Vocational Training. I have a good experience in scientific research in collaboration with companies.
              -Is it possible to find job in the university or in Colleges or Other Vocational Training institutes like CEGEP in Quebec?
              -At the beginning, can I subscribe in a scientific research laboratory in any university in Canada to do a PhD to facilitate my    
               integration in Canada?

[explorer101]

1-I'm 40 years, my wife is 31 years, and my daughter is 4 years.
              -Is it too late for me to start the immigration process?
               >>>> You are not late, age of 21-49 years gets 10 points.   

              -Is it possible for me and my wife to find job in Canada even with my age?
              >>>>> 40 and 31 yrs , you are not old . You people will get jobs.
               -Are there limits for age to work in Canada?
              >>>>> You are 40 and 31 yrs , No age limit here.
 
2-I have a good experience in teaching mechanical and industrial engineering in the university and College and Other Vocational Training. I have a good experience in scientific research in collaboration with companies.
      
        -Is it possible to find job in the university or in Colleges or Other Vocational Training institutes like CEGEP in Quebec?
              >>> This no one can answer for you here. Getting a Job in these fileds is not easy, they want canadian education , experience and accent.  I dont think vocational training teachers are on new list. Check that out first from CIC website.

              -At the beginning, can I subscribe in a scientific research laboratory in any university in Canada to do a PhD to facilitate my    
               integration in Canada?
             >>>> You can always do it and take up survival job for meeting expenses.