Some websites

Following are some websites in which students can find explanations and examples of a wide array of grammar and writing topics:

Guide to Grammar and Writing: Use the Word & Sentence Level menu to find information about parts of speech, punctuation, etc. Use the Paragraph Level menu to find help with very common writing problems that middle school, high school, and college students usually have. Use the Essay & Research Paper Level menu to find topics relating to the writing of entire papers, no matter what the length; this section also includes links to MLA and APA guidelines for paper formatting, citing sources, etc. Sometimes, an easier way to navigate this website is to use the INDEX. 

English Grammar and How to Write Better: This is an amazing website that is very straightforward. "Stop. Writing. Junk." There are very obvious links right under the title of the website - these lead to a wide variety of grammar and writing topics, including adjectives, adverbs, nouns, prepositions, verbs, how to write better, and on and on. Lots of good help here.

Grammar Bytes: This is a terrific website with two sections - one for explanations (Terms) and one for practice (exercises). Try it. It's wonderful!

LEO: The Write Place Catalogue: Here's another from a university (St. Cloud State in Minnesota) that is magnificent. It includes links to explanations and examples of just about everything - from grammatical topics to thesis statements to introductions and conclusions ... and everything in between.

Try them. You'll like them. And be sure to post in the comments if you have questions.