Link building is a crucial part of search engine optimization (SEO) and can significantly impact your website’s visibility and authority. Here are 20 valuable resources and strategies for link building:

1. High-Quality Content Creation: Create informative, engaging, and shareable content that naturally attracts links from other websites.
2. Guest Blogging: Write guest posts for reputable blogs in your niche, including a link back to your site in your author bio.
3. Broken Link Building: Find broken links on websites in your niche, then reach out to the site owner with a replacement link to your content.
4. Link Reclamation: Monitor mentions of your brand or website and reach out to sites that mention you but don’t link to you, asking for a link.
5. Infographics: Create visually appealing infographics and share them on your site, encouraging others to embed them with proper attribution.
6. Resource Pages: Identify resource pages in your niche and ask to be included as a valuable resource.
7. Content Outreach: Share your content with influencers and bloggers in your industry and ask for their opinions or a mention in their articles.
8. Skyscraper Technique: Identify popular content in your niche, create a better version, and reach out to websites that linked to the original content.
9. HARO (Help a Reporter Out): Sign up for HARO as a source and respond to relevant queries from journalists and bloggers.
10. Social Media Outreach: Promote your content on social media platforms, as shares and engagement can lead to more backlinks.
11. Email Outreach: Send personalized outreach emails to website owners, bloggers, and influencers, requesting backlinks or collaborations.
12. Guestographics: Create infographics and offer them to bloggers in exchange for a link and a mention in their blog post.
13. Expert Roundups: Participate in or host expert roundups where multiple experts in your field share their insights; this often leads to backlinks.
14. Local SEO: Optimize your Google My Business listing and seek local business directories to build local backlinks.
15. Niche Forums and Communities: Participate in forums and communities related to your niche, including links when they provide value.
16. Link Building Tools:
    • Moz Link Explorer
    • Ahrefs
    • SEMrush
    • Majestic
17. Competitor Analysis: Analyze the backlink profiles of your competitors to identify potential link-building opportunities.
18. Content Syndication: Share your content on platforms like Medium and LinkedIn with a link back to your website.
19. Press Releases: Distribute press releases about your company or noteworthy events, including a link to your site.
20. Ego Bait: Create content that features or praises influencers in your industry, then reach out to them and ask for a share or link.

Remember that ethical and sustainable link building is essential for long-term SEO success. Focus on providing value to your audience and building relationships with other website owners in your niche to earn high-quality backlinks naturally.