so after the correction, i should just fly the new heading of hlaf the correction so to speak all the way to the turning point?
That's the theory. And for the length of leg which you'll do for your skills test, and for the kind of flying you'll do soon after your skills test, it'll work fine. As you build experience and start flying further, you might find you need to make further corrections on longer legs, but you'll hopefully have the experience to deal with that once you start flying distances where it becomes important.
also i have read that if you get lost, you would fail the exam, however if i am unsure about position, could i still use radio aids or ask ATC vectors?
My gut feeling on this one is No. If you are unsure of your position, use the techniques you have been taught (identify an area on the chart where you could reasonably be, then read from ground to chart to fix your position within that area) to fix your position. I'm not 100% certain that using nav-aids or asking ATC for help is a fail (after all, this is what you should do after your skills test if reading from ground to map doesn't help), I'd have to check with an examiner to be certain, but I wouldn't recommend it on a skills test. The examiner needs to see that you can navigate using ded reckoning combined with map-reading, so you need to make sure you show him that that's the case.
FFF
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