There are a wide range of resources available on Teaching English to Speakers of Other Languages (TESOL). Use Library Search to find eBooks, journals and material held within databases.
There are many additional web based resources that may be useful to you as well. For example EAL Nexus.
EAL Nexis aims to support those teaching learners who speak English as an additional language (EAL). It provides ideas for the classroom and support for parents new to education system.