With the present shortage in Nigeria you may well be told that your first assignment will be there, flying S76. If you end up in Africa, many of the bases have S76s, though in Sudan they have SA365s. Nigeria is a cr*p place to be but has some of the most modern hardware with mostly new S76C+s and SA 365N3s and AW139s on the way before the end of the year.
Compensation depends on what experience you have, which will be used to determine your starting grade. That will give you a nonthly basic, paid every month. As an IFR offshore Captain, you'll then get $Cdn 213 per day on site and an incentive pay allowance per day on site ranging from zero in a peaceful place like Thailand, to $Cdn 100 per day in a violently unstable place like Nigeria. There are also good health insurance, loss of licence and accident insurance and pension schemes. If you want to buy a personal computer they'll give you an interest-free loan over 2 years to pay it off. The downside is that the method of payment is unnecessarily complicated and pay varies from month-to-month depending whether you're on tour or at home.
Accomodation varies from country to country and base to base. You could be in a nice, comfortable villa in Malabo or a run-down estate in Nigeria (but with a move planned to a nice estate in one of the most dangerous parts of town). You may be in a base with central catering and meals supplied, or one with a daily allowance where you can either cook for yourself, eat out or buy food and have a cook prepare something for you.
They pay travel from your base to home, but at the moment they use some scheme of very cheap marine fares and you carry documents claiming you're based on a rig in the Solomon Isles or wherever
. Many of the airlines are now seeing through this scam and refusing to issue marine fare tickets to CHC personnel. You can claim for a taxi or mileage from your nearest airport to home.
You'll also be sent to a simulator centre somewhere annually to carry out 6 days of training, a mixture of technical refresher and sim flying. This is well planned and very good value. In general the quality of training in the company is good.
Good luck if you can stay clear of Nigeria, but if not you'll find it a sometimes frustrating, but varied and interesting place for your first base.