Where can I find help with prepositions?
Lots of students have problems with prepositions. Here is a link to a site you will find useful.
You should also pay attention to prepositions when reading and listening because many prepositions simply need to be learned like vocabulary. If you have the Vocabulary course, follow Chris' advice in the Vocabulary Improvement Plan lessons.
You can also use the Challenges & Skills in the VIP Community to help you practice. Search for: Grammar: prepositions
You can also make your own gap fill exercise to help you practise the use of prepositions with this tool: http://l.georges.online.fr/tools/cloze.html
Watch this short video first that explains how to use the cloze test creator: