There are many websites that can help you with TOEIC Vocabulary and Grammar Skills. Below are some of the best websites I have found.
TOEIC Vocabulary
TOEIC Grammar
A Great English Skill-building Websites
Another great place to begin to build your TOEIC Vocabulary and Grammar skills is at www.LearnEnglishFeelGood.com. There are hundreds of listening activities, vocabulary building exercises, grammar practice pages!