ok started...

[Mace_cro]

i am starting to use loops,so i need some help, first is there a way to conect a guitar and wich is best keyboard to use?

[Fishy]

What do you mean connect a guitar? Do you own a guitar and you want to record something to use in fl?

Any keyboard with a MIDI output will work, so all you need to do is find one that suits your budget. You'll want a USB MIDI keyboard probably, M-Audio make some nice cheaper one.