As a free trial member, if you wish to promote Wealthy Affiliate, you will get a commission that is 50% lesser than premium members. For example, free trial members earn $4 and premium members earn $8 on the first month subscription, $11.75/mth of commission for recurring payments for free trial members and $23.50/mth for premium members. I hope this clarifies.
When I first started, it took me 2 hours during weekdays and 4 hours or more during weekends, and this schedule lasted for about 4 to 5 months. (That is till I got my first commission) Then now it is about 1 hour every weekday and 2 hours during weekends. Of course, I will work more if I have the time because I am passionate about my online business.