Can i buy a book convert it into an ebook- pdf file and resell it? Is it copyright infringment

Unless the book is in the public domain, NO (you cannot legally convert it into a PDF and resell it without permission from the book publisher) and...

The short "phrases" that you have listed would not (if used as simple text, and without a protectable decorative font or artwork) be protected by...

Can I alter used toys and games and resell them?

As the other attorneys have indicated, whether you can do what you are proposing without infringing on the IP rights of others will depend in large...

The original elements that make up your "music" (e.g., your words, melodies, and performances, etc.) are automatically protected by Copyright Law...

How can I protect my unique text and design from being stolen by the company I'd like to sell or license it to?

To some extent the answer to your question will depend on what the real elements are. But, in your example, you could register an image of the...

Can I use stories in a book compilation if the original authors of the stories are unknown?

No, you cannot legally use the stories by "anonymous" without permission. Please note that while some of the stories by "anonymous" may have...

Can I make and freely distribute (make available at no cost) audiobooks of public domain works?

Yes, you could make the audiobooks from texts that you know are in the public domain and offer them to the public for free OR sell them. Up to...

Is it legal to create an instructional DVD that teaches singers how to sing songs from one specific Broadway show?

In answer to your latest question (in the comments), the license you will want to get is called a synchronization (or "sync") license. A sync...

I agree with my colleague. It depends. Also, you should NOT assume that there would be a ban on reproductions. If a painting is deemed to be...

I would just add three comments to what my colleagues have posted. 1. If your source for the logo is an authorized iron-on decal or patch or...