need help with thesis and topic sentences.

Is this a good thesis?
Social networking help change the we speak it is daily journals,send invitation to events, and meet new friends.

Okay so you're writing about social networking aren't you?

Broaden it a bit. Basically you are talking only on how it helps you stay connected. Why don't you add in about how its changed the way we keep up with current events

NOTE: Libya and Egypt organised revolts via twitter...

Think about how you can also add in how it allows people to present a glorified version of themselves.

So how do you think you can change your thesis to reflect that?

Maybe something like
Social networking is a powerfull force in modern society. It helps us stay connected with friends, even if we don't show them the 'real' us and it has shaped current events and our views on these events.

Neither of you has written a true thesis statement. It's all factual; there's no position in either one.

Your thesis statement must include factual information plus your position/opinion/stance. Without your position on the topic, it isn't a true thesis statement. So think of this sentence as the angle you want to take on the topic and what you intend to prove by the end of your paper. (If your statement is simply factual, then there's nothing to prove!)

http://blog.eduify.com/index.php/2009/06/21/5-tips-on-how-to-write-a-strong-thesis-statement/
Read carefully and follow ALL directions.

http://leo.stcloudstate.edu/acadwrite/thesistatement.html
This is one of the very best places I've seen online to help students write good thesis statements. It shows you sentences that aren't thesis statements and how to turn each one into real thesis statements.

can i get some suggestions what I should write about?

When it comes to evaluating a thesis statement, there are a few factors to consider. A strong thesis statement should indicate the main idea of your essay and present a clear argument or claim. Additionally, it should be specific and concise, setting the tone for the rest of your paper.

Let's take a look at your thesis statement: "Social networking helps change the way we speak, through daily journals, sending invitations to events, and meeting new friends."

This thesis statement does present an argument – that social networking has an impact on the way we communicate. However, it could be further improved. Here's a suggested revision:

"Social networking platforms have revolutionized communication by altering our language usage, facilitating event invitations, and enabling us to form new connections."

This revised thesis statement is more specific and concise. It clearly states the main idea and previews the three main points that will be discussed in the essay.

Remember, your thesis statement should guide the content of your essay and serve as a roadmap for the reader. It should also be supported by evidence and analysis throughout your paper.