and question to number two i have i will put it n chronilogical order so it doesn't confuse you when playing it
Chrimson sphere 9: Ch1, In front of the den of woe it is the gorge at the bottom of mushroom rock road you will follow ormi and logos into the ravine.
Chrimson sphere 7: Ch2, mushroom rock, find nooj standing infront of where you caught ormi and logos.
Chrimson sphere 10: Ch2, guadosalam, after sneaking into leblanc syndicate's secret door where brother gets you busted walk down the hallway and keep heading right you will find the sphere on logo's nightstand.
Chrimson sphere 1: Ch3, Bevelle, go to where you fought bahamut it triggers a sceene with baralai nooj and gippal
Chrimson sphere 4: Ch3, leblanc's round room with the sphere oscillo finder ( basically where you found the broken sphere) climb the ladder and walk to the otherside to find a treasure chest.
Chrimson sphere 2 & 3: recieved at the end of chapter three by nooj ( special note to trigger a heart tending scene after this when yuna says "I am all alone." press x and keep pressing it no matter what to follow tidus' ghost)
Chrimson sphere 5: end of Ch4, After the concert speek immediately with leblanc in the engine room then go talk to shinra
Chrimson sphere 6: Ch5, via infinito, cloister 0
Chrimson sphere 8: Ch5, via infinito, cloister 20