the last two are giving me trouble, esther and velle, the others were kinda easy thanks to hints in the thread heh but so far nothing to help with those two.
someone said velle's day job is at the sex shop but she's never there.
With Velle, in the beginning you have to go to the gym and workout to run into her, not sure if it matters if it's the morning or afternoon... Just keep going there till you run into her... You'll need to run into her there again in a later segment... From there it is mostly either running into her randomly in her room either first thing in the morning or later in the day... Eventually you'll need to go to the night club and find out you need a pass, which you get from Velle by doing a favor for her, which can be completed in the park by clicking on a bush... Once you have the pass, meet Velle at the night club... And it kinda goes from there till her main story ends... Not sure if it's random or part of her story line, but at one point you get caught by her peeking into the bathroom... Velle's story line is short... And I never ran into her in the sex shop...
The best advice I can give is to check every girls door first thing every morning, as well as the bathroom and pool... If they let you in and just sit there, then it has no bearing on a story line most of the time... Do the same thing at Night...
As to Esther, just keep helping her out with gardening and sometime hanging out with her in her bedroom... You may also need to go to the art school for her story...
Another piece of advice is get familiar with the Mall, sometimes story events take place there and the shops are there for all the items like the cook book, another camera, sun tan lotion, etc... The Full Moon store is there as well as the sex shop... Also, some of the women's story lines segments only trigger as you exit from the house via the door rather than going directly to the navigation map...
Hopefully that helps out some...