i would take an open mind,the desire to learn,lots of bandaids and a pair of safety glasses
i recently made the swtich from slabbed material to rocks.
most my knapping has been obsidion slabs,and doing this with rocks is completely differant
its like learning to knapp all over again.
oh ya,dont forget to take along some patience,you will need it.
this is a very rewarding,but kinda tuff thing to get the hang of.
like they say "knapping is a hobby of tonnage"
good luck and remember if ya aint bleeding,ya aint trying
peace,
tim