When you are trying to get someone to subscribe to a newsletter, there are a few different ways that you can go about it.
The first way is to simply send them an email that contains a link to the newsletter. You can also create a banner or ad on your website that includes a link to the newsletter.
The second way is to send them a notification in their inbox when a new issue of the newsletter is available. You can also create an RSS feed for the newsletter and add it to your RSS reader.
The third way is to have a sign-up form on your website or in your newsletters. You can also offer a discount for subscribing if they register first.
The most important thing is to make sure that you are creating interesting content for your newsletter and making sure that you are Targeting your audience correctly. If you do these things, then you should be able to get people to subscribe and be kept up-to-date on what is happening with your business.