Another author on Goodreads asked me this question on my profile, but after asking immediately pushed her own book. If you include a link to your book anywhere it wasn't asked for (including in a comment here), it is spam and will probably be deleted. I struggled all day today with (a) responding to her question on my Goodreads profile and thereby not only encouraging her (and others) to spam because her book link would now be published on my profile or (b) report her to Goodreads as a spammer or (c) ignore her. None of these options appealed to me.
First, I have not read her book, and I do not intend to read or review it. It's a self-help book, and that is one of the few genres in which I have no interest. You have to write a really good self-help book to get me interested in reading it--although it doesn't necessarily need to be targeted to me.
Second, she called me "Jenna," which makes me think I wasn't the only author who got thus spammed. Note: If you are writing to anyone, especially book editors of traditional publishing companies, and you are using a form letter, make sure you change names, addresses, etc. No one wants to get a letter addressed to someone else.
Third, I have no way of questioning her to try to find out if she was intentionally spamming me or not. I have reported other people for doing things like this, but usually only under pressure from fellow moderators (who want me to report people because they don't want to be spammed, too--and reporting them will mark them as a spammer and reduce their ability to do this or get their account banned).
Finally, I really don't like to ignore questions--especially legitimate ones, which is why I decided a blog post was the best way to deal with this.
So, the best way to get reviews is NOT to spam people--especially other authors. Sending me a link to your book is not going to get me to buy it. Even if I do buy your book, that doesn't mean I have to or will review it. Plus, if the person you spam gets upset over that, they could leave you a bad review.
I discussed Goodreads Giveaways as a method of getting reviews here. It is expensive and for about every 100 books I gave away, I got 2 reviews in return. Still, that is one way to get reviews.
You can also pay scammers to write (usually AI generated) reviews for you that are vague. These are generally all positive because you are paying them and really have little value beyond tricking algorithms (at least temporarily). These are also usually expensive, and you are not dealing with good people. Most fly-by-night marketing scams also use these.
You can do review exchanges--but by that I do not mean you give me your book for me to review and I give you mine. This is called a reciprocal review (you are reviewing someone who is reviewing you) and it is forbidden (and can get you banned) on most sites that allow reviews. A legitimate book exchange allows you to give your book to someone to review and in exchange you review someone else's book. There are a few groups like this on Goodreads. These do not usually cost anything (or sometimes cost the price of a book), but they require a time commitment to reading other books.
There are also numerous paid services that have started doing this--but only a few are reputable. These are also online review exchange websites. These are a little more risky and also tend to be expensive. Some require you to use them before you publish your book fully (it should, however, be edited and polished fully). Some are set up so that you can give reviews for other books to earn your reviews, but all of them use a business model with varying costs if you want to get enough reviews for it to be worth it. I watched a YouTube video where an author talked about how great one of these was. However, I noted that she spent hundreds of dollars and admitted she only got about 16 Amazon reviews. Goodreads reviews are great, but they don't usually translate into sales as well as Amazon reviews. I find it hard to justify that kind of money for the return.
I have some other methods of getting reviews that I plan to explore over the next couple of years. I plan to write a second post about those methods and explain whether or not they worked.