I started off over 4 years ago with the powermax,up tool, wand, pipes, stain kit + training,you will also need a decent vac and a number of other things,if i was starting off from scratch again i would def add a sebo duo to the list,it`s improved my results by a monumental amount.
Also factor in advertising,flyers,leaflets,possibly a web site too.
First couple of jobs i did were friends and family,still pretty scary though,sometimes still scary when carpet changes colour when you apply the soloution !
Did a light green one once and first bit of fluid turned it dark brown ! was all the dirt in it,took a lot of cleaning before it went green again.Customer was stood watching over my shoulder saying i hope it`s not going to stay like that !
Sure the will be a few far more experienced c/cers along to give you advice soon