[quote=@Keyblade87]
EDIT: Also I have a question....When performing a Twin Drive/Triple Drive if you get a stand trigger and stand your vanguard and attack again do you get another Twin Drive/Triple Drive? I would imagine that's how it works but i want to be certain.
[/quote]

No, getting a stand trigger only allows one to stand a rear guard, not the Vanguard.  Only card effects that specifically state that one can stand their vanguard allows a vanguard to attack again, which would include Drive Checks.

As for Generation Stride, one uses G Units, which are Grade 4 that are placed in a separate deck from the main one, working somewhat like the special monsters in a Yugioh extra deck.  When both yours and your opponent's vanguard are at grade 3, you may discard cards from your hand equal to grade 3 in order to 'stride' a G unit on top of your vanguard which lasts for only one turn.  The easiest way to stride is to discard a single grade 3 but if you need too can discard 3 grade 1s or a grade 2 and a grade 1.  Used up strides then get placed face up next to the G Unit deck and can help activate some units special abilities.