Regular Group for 5v5's?

I'd like to find some other semi-serious players who want to play together regularly (at least once a day, preferably). I'm level 25.

Along with the more general concepts I understand:

• Zoning
• Denying exp / laning

I mostly play:

• Tryndamere (owned)
• Vayne (not owned, so, not playing her right now)

I have been working to expand my repertoire, but it takes time. I've been working on Amumu and Teemo. I'm open to learning new champions as required for team composition.

It'd be nice if the group included someone more experienced who could help drag me upwards, but I understand the it's unlikely for someone to slum it with new people.