You may want to consider using private label rights material in your ebook for a number of reasons. You can purchase private label rights (PLR) to articles, ebooks, reports, software, and other types of content fairly cheaply. It's more expensive than using your own experiences and doing research, but it is much cheaper than hiring someone to write your ebook.
When you buy private label rights, you are given the "source code" of the material. Having the source code allows you to change the material any way you like. You can edit it, add to it, add affiliate links, make yourself the author, and sell it in any number of different formats.
You can buy entire ebooks with PLR. Some people buy these ebooks, just change the name of the author, put their own links in, and start promoting it immediately.
Of course, if you do that, you can have a product ready to sell or give away within hours of purchasing the private label rights. That's the good part.
The bad part is that you do not have original material. If this ebook's private label rights have been sold to you, they have also been sold or distributed to hundreds or even thousands of other people, too. They may have just changed the author's name and the links just as you did.
If the ebook or excerpts from it are posted to the Internet, they will be not be recognized by the search engines as new material and will not be ranked. It's almost like they do not exist on the web because they are a copy of something else already there.
While private label rights materials can be excellent to use when writing your ebook, you just have to be careful how you use them. Basically, you can cut your writing time by at least 75% by using private label rights materials. You just have to use the material as one of your resources or rewrite the material so that it is, or at least appears to be, original. Rewriting the material will take some time, but only a fraction of the time it would take to gather, organize, and write that same material from scratch.
Naturally if you are using PLR material for your ebook, the ideas you include will likely have been around for some time. That may make your ebook less valuable to many people. On the other hand, if you are mainly using your ebook to build your mailing list, get your name recognized, and get your links out there to be clicked on, PLR materials can be great for you, saving you lots of time and money.
When you go searching for PLR material that you can effectively use, I suggest that you look for someone who is in the full-time business of supplying these materials. They should have a membership site that you subscribe to and make the PLR materials available to you to download. These materials should even come with sample sales pages for you to use. The material should also come to you in a form that you can easily change to fit your own needs.
An example of this would be getting a document in Word which is easily edited instead of as a PDF which cannot be edited.
If you plan to continue to write ebooks, articles, and other informational products, you need to find vendors who constantly add PLR materials to their membership sites for you to download and use.
Of course, each membership site will come with a monthly subscription fee, but you should be able to cancel at any time. Even though it will be more expensive for you, I would subscribe for a month or two at first rather than for the cheaper full-year subscription to make sure that you are getting what you thought you would and that you are able to use the material on an ongoing basis.
Content in the public domain is very similar to private label rights material. With both of these types of content you can basically re-work the material and use it to create an entirely new product or simply use it as your own.
Anything published between 1923 and 1963 is considered public domain material, meaning the copyright has not been renewed. Since there is no longer a copyright on that material, you may copy it or republish it, even for commercial use.
When I say that you can get someone else to write your ebook for you basically for free, this is what I'm talking about. You can either use material with private label rights, or you can find public domain materials and use them just like you wrote them to begin with.
For reasons I have pointed out above, you will most likely want to reorder and rewrite the material you use in this way, but that is up to you. Many articles and ebooks that are published today start out as private label rights materials that are purchased, adapted by authors, then published as their own.
I want to recommend two private label rights (PLR) membership sites that are good, reasonably priced, and add a lot of new material at least once a month. You would do well to subscribe to one or both of these services as I do. It's worth the money just in the time it saves you in writing your own articles and ebooks. That doesn't even count the software you'll also get with PLR rights and the many ebooks you'll also get with resell rights.
These two sites are:
Gabor Olah's PLR Wholesaler
Socrates Socratous' Resell Rights Fortune
Both are very good, but the advantage to Resell Rights Fortune is that you have a searchable database that makes it easy for you to find just the type of material you need quickly and easily. Again, both the sites are worth the investment and will save you both time and money.