If you are using the email marketing software AWeber (free for up to 500 subscribers, see https://www.aweber.com/pricing.htm) and aren’t quite familiar with coding, then using a form builder that allows you to smoothly integrate AWeber will save you a lot of time and hassle.
With the AWeber addon that a fair few form builders offer, you will be able to build your list even faster, since you can easily design professional quality sign up forms for your site. No need to manually move newsletter signup data from WordPress to AWeber, or use another tool like Zapier to bridge the gap.
With the right form builder you can link AWeber to your WordPress site with a few clicks. You can then turn any of your forms into a sign up form and choose which list you want to add the data to and pair your WordPress form fields with the fields in your AWeber list.