Before posting you might want to read the Tips for getting help.
Many users prefer to use online forums rather than joining a mail list which can lead to lots more email traffic so we use the online forums at Nabble forums which also work with our Mailing Lists so that both stay completely in sync. Use either the mailing lists or online forums, it's completely up to you.
If you prefer to use a mailing list instead then check out our Mailing Lists. Note that the Forums and Mailing Lists are kept in sync so its your choice which you use.