Both the 1 & 3 step "camps" believe in Ac. 2:38.
The 1 step camp maintains that one is rapture ready at repentance, 1st step, but still must be water baptized and receive the baptism of the Holy Spirit.
The 3 step camp maintains that one is only rapture ready after the completion of the 3 steps, repentance, water baptism and receiving the HGB speaking with tongues.
The above is a summary only and there a number of iterations of each "camp."
