I use these plugin for my website. They are beginner’s friendly and most of them are free except for Thrive Leads in which I paid a yearly subscription.
Ad Inserter
Use this with Google Adsene to advertisement throughout your website. I also found a hack for Mailerlite that work similar to Convertkit.
Ajax Load More
Load your page faster with lots of images.
Askimet Anti-Spam
Use to prevent unwanted comments on your site
Auto Terms of Service and Privacy Policy
Add Term of Service and Privacy Policy to your website.
Visit Auto Terms of Service and Privacy Policy
Convertkit
Email service provider to add your lead magnet on your page.
Google analytics by Monsterinsights
See traffic stats on your website.
Visit Google analytics by Monsterinsights
Jetpack
Add security to your site
Pretty Links
Link shortener straight from your website.
Really Simple SSL
Secure Socket Layer for your website.
Social Warfare
Add social shares on your website.
Thrive Leads
Create a scroll mat to capture leads on your website.
Ultimate Nofollow
Avoid being whack (penalized) by Google for having sponsor or affiliate links, this will add a nofollow to your desired links.
W3 Total Cache
Make your page faster for revisits.
wpDscuz
User comments with an extra layer of security.
WP Smush
Automatic condensed images on upload.
Yoast SEO
Search engine optimization for your website.