What they all said.
I just made my second HP batch. Used just the recipe I had and knowledge gained from SMF and the internet and watching You Tube videos [some better than others].
Failed several times when I tried to make soap a few years ago, but came back to it. Many more resources out there today and better molds, etc.
Personally, the first times I had to restrain myself from adding colorants, ingredients, panicking [must get to trace, must get to trace, lye burns and can blind you etc] and making huge batches or else all that effort wouldn't count.
After watching the processes and seeing the relaxed pace, the techniques, rational safety precautions taken it's actually been fun instead of stressful. And I've produced solid C Grade [IMHO] efforts since coming back to it.
You can absolutely do this without a class. Your own kitchen is your classroom.