There are ways to replace virtually every SBI module on WordPress. Most can be replaced using plugins, others require a 3rd party resource. Most SBI modules have at least one free alternative.
Here are a few examples:
SBI Forums: There are webmaster forums all over the internet. There are very helpful and professional WordPress groups on LinkedIn that you can join for free.
BlockBuilder 2: WordPress themes. You create the layout in the theme options then use the text entry screen to write your pages and posts. On the other hand, you can use page builders and their drop and drag features to help you do to structure and style pages without any coding skill. You can use these page builder with any WordPress themes.
BrainstormIt: Keywords tool like Semrush, LongTailPro, KWfinder as far better than SBI brainstrommer. Each of the tools offers some excellent features to find out profitable keywords.
MailOutManager:
- MailChimp (free and paid),
- Aweber ($),
- GoDaddy Express Email Marketing ($).
FormBuildIt:
- Contact Form 7 plugin (free),
- Jotform.com (free and paid),
- GravityForms ( paid)).
- Ninja form (free and paid)
Action Guide: There is a multitude of websites that offer website building and marketing tips. You can also find books on marketing your site on Amazon.com. A book I highly recommend is Marketing in the Age of Google by Vanessa Fox, the creator of Google Webmaster Tools.