I'm no expert in your field...but will give you general advice from my own experience. I would strongly recommend joining a bridging program relevant to your area of expertise as that should help you understand how things work here and will also help you in building connections (your colleagues and program instructors will be your first "professional network"), connecting with like-minded professionals will help as you'll be sharing ideas, experiences and job search tips, some might get employed faster and refer the others..etc.
Ofcourse, your job search and online applications can start from day 1 (or even before you land).