It's typically quite difficult to get a work permit.
Before you can apply for a work permit, you have to find an employer who is willing to offer you a full time job. That employer then has to obtain something called an approved LMIA. This process costs the employer money and takes several months to process. If the LMIA is approved, you can then apply for a closed work permit tied to that specific employer.
So your first step is to find an employer in Canada who is willing to give you a full time job and who is also ready to go through the LMIA process.