First of all, fix yourself 2 goals
The first should be reachable within months
The last is where you want to stop
How much ? 2-7 days a week.
How long ? 15-3600* minutes a day
*: passive Penis Enlargement
Its all about how you can dedicate yourself into this.
Like bodybuilding, if you give up after 2 sessions. Your not going to have results from no Penis Enlargement.
Getting the right tools and the right tricks might help.