I_am_an_idiot: How can you make such an important and spiritual decision without having knowledge?
The same way Cornelius and his whole household did after hearing less than 200 Greek words from Peter. (Acts 10)
The same way Lydia and her entire household did after one discussion with some disciples. (Acts 16)
The same way the Philippian jailor and his entire household did after one late night discussion with Paul and Silas. (Acts 16)
The same way the Ethiopian eunuch did after one brief conversation about Jesus, and the way in which Jesus fulfilled prophecy, with Philip. (Acts 8)
The same way the 3,000 on ONE DAY did after Penetcost 33 CE. (Acts 2)
And exactly NOT the way Jehovah's Witnesses do it.
Aren't you glad you asked? There is an ACTUAL Scriptural method and Scriptural requirements for baptism. And it doesn't match the JW method. At all.
WHAT in the Bible could possibly give someone the idea that a person could be qualified to preach PRIOR to baptism? I notice you did NOT try to defend their doctrine Scripturally. That is because it is Scripturally indefensible. I invite you to try. Please.