I would like to perform my own oil change on my 2009 Dodge Journey (Right hand drive). As I'm a total novice, can you explain to me where I need to drain the existing oil from

I am not familiar with this model but this sounds like an indication of possible serious engine wear. When you say loud are we talking about knocking noises? When the big ends and mains wear the oil has a bigger gap to go through and so the pressure goes down. Lower pressure means lower oil use and even more wear. Fit an oil pressure gauge to check for problems.

You could try some YouTube videos on similar models.
Its a messy job, and for most people easier to pay someone to do.
You have to remove the drain plug from the oil pan to drain the oil into a pan, then dispose of it safely, and change the filter, then refill the oil pan with new oil.

You're probably right. It may be too new.
You could sign up on alldata.com for tech and repair info for a fee.

how do you change heater hose on 2009 dodge journey 2.7 v 6

Dodge Journey owners please go to http://www.change.org/petitions/dodge-journey-s-defects sign and pass along please. Dodge had built and sold this car with defects that they refuse to fix, this is not the kind of quality we should expect.

an oil change on ur journey is what i would recommend. its an usual issue , so need to worry much.

While I could explain what to do, it may be better if you have detailed step by step instructions with illustrations on hand. You can get these free by registering for free at www.autozone.com Once registered you'll have access to a variety of DIY repair manuals.

Your new vehicle is covered for everything the first 36,000EXCEPT oil changes tires and windshieldwipers .
I have had every service covered ths far on my 09 Journey
The drive train ------------engine & trans is life time