Hi!
Welcome to the world of Landrover.
I would agree to check the intercooler hoses first as these are by far the easier.
Remove the top engine cover (if yours has one) cos on my 2001 td4 the pipe is partially covered by this - it wears underneath where it passes close to the engine. I fitted a new one on mine and to aid it not happening again got some foam pipe lagging, split it with a stanley knife and then used black insulating tape to secure it in place on the pipe.
The pipe which connects the turbo itself is not as easy to see - you'll need it up on a ramp or drive up ramps to make easier. As you crawl under neath look up on the drivers side and you'll see the hose on the turbo. Mine was perished so this changed too - think it was about 34 quid delivered from rimmer bros.