I am in the process of immigrating through express entry. But in your case you need to check out whether lawyer is in the list of NOC available under this program (edited: yes, it is. It is even in the Ontario nomination program list)
Also check out Morden immigration stream. Also there is a thing called province nominations and they differ from province to province. Manitoba is thought of as the easiest to immigrate to. Prince Edwards Island may let you in under some circumstances as well.
Update: lawyer's noc is 4112 and they are eligible for express entry.
http://www.canadavisa.com/canada-imm...awyers.391766/
Next steps:
Pass an IELTS general (not academic) exam.
Evaluate education, wes.org/ca is the best.
Gather reference letters to prove work experience.
Get a police clearance certificate.
Pass medical exam in a specific hospital associated with Express Entry (I have no clue if there are any in Salvador, but you can find out on the site).
It's a fairly standard process with loads of videos and web resources available to guide anyone through. You don't even need any paid agents to help him along.
Calculate your points and find out if you have a chance. Current threshold is 436.
While doing express entry, don't neglect other routes as well.