Here are a few Affiliate marketing programs that are popular among beginners

SendOwl Affiliate Program: SendOwl Affiliate Program is a great option for beginners who are interested in promoting e-commerce solutions such as order management and shipping. It allows you to earn commissions on any resulting sales through your affiliate links.

Niche Scraper Affiliate Program: Niche Scraper Affiliate Program is a great option for beginners who are interested in promoting research tools such as product research and keyword research. It allows you to earn commissions on any resulting sales through your affiliate links.

AWeber Affiliate Program: AWeber Affiliate Program is a great option for beginners who are interested in promoting email marketing solutions. It offers a wide range of email marketing tools and allows you to earn commissions on any resulting sales through your affiliate links.

Canva Affiliate Program: Canva Affiliate Program is a great option for beginners who are interested in promoting graphic design software. It offers a wide range of design tools and allows you to earn commissions on any resulting sales through your affiliate links.

CEX.io Affiliate Program: CEX.io Affiliate Program is a great option for beginners who are interested in promoting cryptocurrency trading platforms. It offers a wide range of trading tools and allows you to earn commissions on any resulting sales through your affiliate links.

Udimi Affiliate Program: Udimi Affiliate Program is a great option for beginners who are interested in promoting solo ads services. It offers a wide range of options to promote and allows you to earn commissions on any resulting sales through your affiliate links.

Fiverr Affiliate Program: Fiverr Affiliate Program is a great option for beginners who are interested in promoting services such as graphic design, writing, and digital marketing. It allows you to earn commissions on any resulting sales through your affiliate links.

MoreNiche Affiliate Program: MoreNiche Affiliate Program is a great option for beginners who are interested in promoting health and wellness products. It offers a wide range of products such as supplements, skincare, and more, and allows you to earn commissions on any resulting sales through your affiliate links.

ClickBank: A marketplace for digital products, ClickBank offers a wide variety of products to promote, including e-books, software, and online courses.

Commission Junction: Commission Junction is an affiliate network that connects businesses with affiliate marketers. It offers a wide variety of products and services to promote, and allows you to earn commissions on any resulting sales.

ShareASale: ShareASale is an affiliate network that connects businesses with affiliate marketers. It offers a wide variety of products and services to promote, and allows you to earn commissions on any resulting sales.

Rakuten Marketing: Rakuten Marketing is an affiliate network that offers a variety of affiliate programs for a wide range of products and services. It is a great place for beginners to find affiliate programs that are relevant to their interests.

FlexOffers: FlexOffers is an affiliate network that features a wide range of products and services to promote. It offers a variety of commission structures, making it a great option for both new and experienced affiliate marketers.

PartnerStack: PartnerStack is an affiliate management platform that helps businesses manage and optimize their affiliate programs. It offers a variety of tools to help affiliates promote their products and services effectively.

Skimlinks: Skimlinks is an affiliate marketing platform that makes it easy for publishers to monetize their content. It works by converting normal product links into affiliate links, making it easy for publishers to earn commissions on any resulting sales.

Awin: Awin is an affiliate network that offers a wide variety of products and services to promote. It is a great option for beginners as it offers a lot of resources and support to help them get started.

eBay Partner Network: eBay Partner Network is an affiliate program that allows you to promote eBay products and earn commissions on any resulting sales. It is a great option for beginners as it is easy to join and has a wide variety of products to promote.

Target Affiliate Program: Target Affiliate Program allows you to promote Target products and earn commissions on any resulting sales. It is a great option for beginners as it offers a wide range of products in various categories.

Walmart Affiliate Program: Walmart Affiliate Program is a great option for beginners as it offers a wide range of products across different categories. It allows you to earn commissions on any resulting sales through your affiliate links.

Best Buy Affiliate Program: Best Buy Affiliate Program is a great option for beginners as it offers a wide range of products in various categories such as electronics, appliances, and more.

REI Affiliate Program: REI Affiliate Program is a great option for beginners who are interested in outdoor gear and activities. It offers a wide range of outdoor gear and equipment, and allows you to earn commissions on any resulting sales through your affiliate links.

Etsy Affiliate Program: Etsy Affiliate Program is a great option for beginners who are interested in handmade and vintage products. It offers a wide range of unique and creative products and allows you to earn commissions on any resulting sales through your affiliate links.

JVZoo Affiliate Program: JVZoo Affiliate Program is a popular affiliate platform that specializes in digital products such as software, ebooks, and online courses. It offers a wide variety of products to promote and allows you to earn commissions on any resulting sales.

Commission Hero Affiliate Program: Commission Hero Affiliate Program is a popular affiliate program that specializes in online marketing courses and tools. It offers a wide variety of products to promote and allows you to earn commissions on any resulting sales.

It's worth noting that before you join any of these program, make sure to read their terms and conditions and understand how they work.