Hilico :
Read all about it in any decent helicopter aerodynamics book, then get it demonstrated - if you're in the UK it needs to be done as part of the PPL syllabus, and is quite fun. If your instructor is game, see it from lowish level - 800' - 1000' with a smartish recovery to see what it looks like when you're most likely to encounter it.
And as for six degrees - angle, shmangle ! You can't see what 6 degrees is like from inside, but you can see IAS and ROD - use them.