Hi Nikalette! Can I be so brazen as to mention my own site, DoctorKeys Online Piano Lessons
It offers a course called Play & Sing
that teaches you to accompany yourself in pop, rock, blues, and folk styles.
Naturally, without knowing more about you, I can't say whether the course would be appropriate for you. The tutorials are designed for people who are just getting started at the piano, but also for more advanced pianists who want to learn to accompany, or become more proficient in pop styles.
The lessons and videos are clearly indexed, so it's easy to skip what you already know, and find exactly what you're looking for.
There's a free video on the site called Piano Accompaniment Styles for 50 Great Songs
, so you can get a feel for what I do without paying a cent. Subscribing to the site costs only $20 for 6 months.
Anyway, I hope my pitch for my own site is not inappropriate here! And I'll be delighted to answer any questions you may have.