Here are some links to materials you can study over the summer:
Health - beginning. Scroll down to see the PDFs and the audio files.
Health - intermediate. Scroll down to see the PDFs and the audio files.
About Canada. This book is divided into levels and topics.
For listening practice, I suggest you watch English with Jennifer.
Don't forget to chat with Canadians wherever you go. Remember our gambits? You can talk about the weather, compliment someone on a beautiful dog or beautiful child, or ask the fishermen and women at the riverfront if they can share their catch.
Enjoy your summer!