Based on custom module development needs to be improve my magento 2 skills

[Jeeva Rathinam]

I want to improve my Magento 2 skills using custom module development, please do everyone suggest list of custom module help to improve magento 2 skills.

It will be very useful that custom module touch points cover all the area of magento 2. Hope it will be useful to other learners as well.

[pedrodiniz]

Hello,
here are some modules that approach specific points.

Payment Method:
https://github.com/pagseguro/payment-magento

Indexies:
https://github.com/Smile-SA/elasticsuite

Shipping Method:
https://github.com/mageplaza/magento-2-shipping-method

REST API:
https://github.com/Binstellar-Technologies/magento2-how-to-create-custom-rest-api-to-fetch-details-o...

Magento has N points to address. I have listed some of the main ones that you will be dealing with the most.

Magento ifself is separeted by module, u can change the module for test, using plugins and preferences, i believe is the best way to learn.