Famous european web hoster, o2switch provides a premium service for WordPress.
Combining security (Anti-DDoS Arbor, active protections and optimizations by web front end) and stability (uptime 99.999%) it is the ideal partner for demanding needs. o2switch manages its entire infrastructure, from servers to data centers, offering outstanding service with excellent value for money.

SOS WP is there to support you in your daily WordPress site maintenance tasks and also to assist you in the event of a bug.
Also enjoy unlimited support with Pro maintenance offers: it's a bit like having your own dedicated Webmaster!

Coupled with SecuPress, this is a good way to have a WordPress site always on top!

SEOPress is a freemium WordPress SEO plugin. Easy to use, no ads / footprints, and white label even in the free. Optimize your meta title / description, generate XML and HTML sitemaps, add Google Analytics with cookie acceptance (GDPR), handle structured data types (schemas), add a fully accessible breadcrumbs to your page, manage redirections, improve WooCommerce SEO and more!
From 0 to $39 / year, unlimited sites.

(only in french) Learn more about WordPress on Le Chaudron, WPMarmite's training platform. You can be, for example, at the basics of CSS, SEO or freelance.