A Bible study for women organised by the Bible Study Fellowship (BSFinternational.org) is held every Tuesday morning in Muttenz. The main lecture and get-together are in English, the break-out groups are mostly held in English, but there are also Chinese- and German-speaking groups.
The next welcome session for newcomers is sometime in early February. I suggest you call Leeann (her phone number is on the link below), she will be able to give you more details. Otherwise you can always pm me. http://www.inforel.ch/i1296.html