Thank you BelowTenThousand, JONESING and radar o'reilly. Your advice so far has been most helpful and is much appreciated.
I'm already beginning to feel not as useless as I thought --> I did feel quite disheartened when I got back from my Navex 2 (although I was relieved that we did not get lost and that we made it back in one piece).
Again, I'd like to thank you guys for your excellent advice. The best thing I could do I suppose is to just give it a try and just keep persisting. :-)