See the Regimental Recruiting brochure (Page 1 here Page 2 here)

From Recruit to Highlander  (extract from the MoD Website)

STEP 2 - RECRUIT SELECTION
Once you have been interviewed by the Army Careers Staff, they will arrange for you to attend the 'Recruit Selection Centre'. There they will decide if you can go straight into training or whether you need a bit of fitness training first.

STEP 3 - BASIC TRAINING
Once you have passed recruit selection, you will be ready to start your basic training. For those between the age of 16 and 17 1/2 you could either attend the Army Foundation College in Harrogate, North Yorkshire or the School Leavers Scheme (North) in Glencorse, near Edinburgh. Those aged over 17 1/2 will go straight to at the Army Training Regiment at Catterick. Here you will be taught the basic skills of soldiering, like how to handle your weapon and basic tactics. Most importantly you will be taught the importance of working as a team. The training will be progressive, you won't be expected to know everything at the beginning, but you will find yourself growing in confidence and self-reliance.

STEP 4 - COMBAT INFANTRYMAN'S COURSE
Once you have completed your Phase 1 training you are ready to move on to learn the specialist skills of your trade on the Combat Infantryman's course. This course is run at the Infantry Training Centre in Catterick and is the most physically testing of any of the Corps or Trades. However do remember that the training is progressive; you will not be tested on a subject that you have not been taught, nor will you be physically pushed without build-up training. You are too valuable to be broken!

STEP 5 - JOINING THE BATTALION
Having passed out of basic training you are now ready to become a Highlander. You have made it through all the training phases and have been selected to become part of the Regimental Family. Training does not stop here, as there are many new and specialist skills still to be mastered. For a start we will train you to drive (FREE), and how to service and maintain your vehicle. There is a whole host of other skills that go hand in hand with being part of a mechanised infantry battalion.

As a Private soldier in the battalion you would be known as a 'Highlander',  

STEP 6 - CAREER PROGRESSION
Having become one of the team in The Highlanders, you will be expected to progress in your career. You will be upgraded over a period of about 18 months from Grade 3 (just out of training) to Grade 1 (senior soldier, eligible for promotion).

To move up the grades you need to pass tests to prove your ability, and once you reach Grade 1 you are eligible for selection for promotion. As you get promoted you will get more pay, but along with the extra money goes the responsibility of looking after your men and gaining more skills and qualifications.

CASH IN YOUR POCKET
The really good news is that much of the cost of living in the Army is subsidised, leaving you with more cash at the end of the day. For example, a recruit in training can earn up to about £9,500 per year, which works out at about £790 per month before tax. But even after all of your tax, food, accommodation and council tax have been paid, you are still left with £500 to spend on whatever you want. As you progress and become a Grade I Highlander you would have £750 in your pocket at the end of each month.

COMPARISON WITH CIVILIAN JOBS
Army salaries may not look all that impressive when compared to some jobs in Civvy Street, but when you look at how much of the money is yours, Army pay looks much better.  Army accommodation is cheaper than what you would pay to rent a room commercially and what's more we provide you with a furnished room (or house if you are married). For under £100 per month you get all your meals and there is no washing up! There are no fuel or electricity bills to pay and you get free dental and medical care.

PENSIONS
After 22 years the Army pension will pay you a lump sum gratuity of £20,814 and a minimum of £544.83 per month for life. All soldiers leaving before the 22 year point have a preserved pension payable at the age of 60, calculated by rank and time served on leaving the Army. In addition after 12 years service you are eligible for a resettlement grant of £6,538 to help you start up a new career.