When setting up a WordPress site, the following types of plugins are often useful to install:
- Forms Plugin: Gravity Forms is quite good. Depending on one’s requirements, it can be made even more powerful with It is especially powerful when paired with Gravity Forms + Custom Post Types and GravityView.
- Security: Locks users out after a specified number of unauthorized attempts
- SEO Plugin: Yoast is very good.
- Calendar Plugin: The Events Calendar
- Back-up Plugin
- Caching Plugin
- Maintenance Mode Plugin
Be sure to also look at integrating one’s site with a newsletter service (example: Mailchimp).