Hello I need a tourist visa to Canada what I do...

According to the mentioned facts, I would like to clarify to you that 
If you want to travel  to Canada you can apply through the (VFS Global) company as it is the certified company in the administration of immigration, refugee and citizenship of Canada for the application of visas in UAE via the website
It may require some documents, fingerprints and photos. After submitting the application online, you will receive a message of the instructions in your account, and you should make a copy the letter and go to the nearest visa application center. You should provide you passport. Pay the fees and obtain the receipt. This receipt includes your review number, which is considered necessary in case of the electronic application  for the center. There is a fees for the biological document includes the fees of the visa application center of Canada too. They may require some other documents based on the type of the visa. Then you can review the status of the visa via the website.
The terms of the Canadian visa:
Valid passport for 6 months
Bank statement
Round air tickets reservation
Hotel reservation
Personal photos