In the US, you'll see a wide range of answers to your questions. It totally depends on aircraft, base, seniority, company etc. Pay is typically hourly. At many of the majors, $6000/month is about what you would make first year. I've got a friend who is pretty senior at United and his take home pay is approximately $25,000 a month after taxes, and he gets about 15 days off per month. Depending how hard you work and how you manipulate the system, I've heard of pay figures at the majors going as high as $45,000 per month (pretax), and in one extreme case at FedEx a pilot made $94,000 (pretax) in just one month. Of course that is at the extreme end but barring a bankruptcy, it is reasonable to expect to make between $190,000-$300,000 pretax at some point in your career at a major.
At the regional level, First year pay is now around $40,000-$60,000, and at my company it is reasonable for a captain with around 5-10 years to make $100,000 (all sims are pretax, as everyone's tax situation can vary). At the top end, there are guys making $120,000-200,000. The guys making $200,000 at the regionals are work aholics and are typically involved in the training department as well and do not take many days off.