The directions are in the link for the block.
As for how many ...you do what you want when you want. If you cant do one this month thats OK.
I have done 1 LOL and have one sitting on my chair waiting for me to do .....
Most of them are about high beginer.....YES you are a high begginer if you want to join this .....thats all it is..frame of mind. SOme are harder than others but thats how we learn by doing. This is about fun and sharing.
the fabric is your choice...the link with the directions has how much of each but most are 2 or 3 colors and a fat quater of each would be plenty.
If you want to keep it to certian colors I am sure someone else who has moreexperience than me can helpo you figure out how much.