You can spend years preparing for a beginning that needed only one brave afternoon.

Preparation is genuinely useful and also the most respectable form of delay. At some point the additional reading, planning, and skill-building stops improving the outcome and starts substituting for it, and the transition is almost impossible to notice from inside.

Ask what would happen if you began now with what you have. If the honest answer is that it would be imperfect but survivable, you are past the useful preparation. Pick an afternoon and start.