I have found sites that offer free information on Grammar and vocabulary that may help you:
These are sites that should help you with vocabulary and grammar:
This is a synonmyn finder which you type in a word and it gives words of similiar meaning:
I hope these sites will be of help. They are free to use and offer a lot of information on the basics of grammar and vocabulary.
Please do not forget to rate a Smiley Face if you have gotten a satisfactory answer, if you still need help please hit repy before rating me with a negative.