[Micah]

The site will give you bonus XP. It is pretty much horrible and should generally be ignored.

Blue spells are nation-specific, and at this point a lot of the nation-specific spells have been added via patches (including whole new nations with spells) and hence are not in the rulebook.

Number of effects on a summoning spell is how many summons you get. In this case you get 20 birds. Some summon spells come with extra effects that are not included, such as the great hawk leader for CotW, or the devil from Horde From Hell. Stuff like this is easiest to figure out just by casting the spells though, not waiting on forum posts. =)