One thing I find is often overlooked in suggestions is that after you have a handle of the basics, documentations for programming languages and add ons/modules can be incredibly helpful. For example, when I was learning to use PyQt, I found the most helpful place to go if I wasn't 100% sure of something was it's documentation

personally, I learned Java from http://www.youthdigital.com , the course is expensive but they'll teach you Java through Minecraft modding and server creating. It really works! Only problem, it's expensive, as I said, so if you don't want to pay money, then there's probably a better way.

I remember the days when I would make Minecraft mods with literally no problem. Back when my life was simple....

Kaiser ZdislavI heard they are recruited since they know coding, so I was wondering if that's true

Yup, I can confirm the rumors to be true.
As for learning Java, Code Academy is a useful website, but if you're looking for an alternative, try this.

I would recommend codeacademy.com. It is a great resource and will get you coding in no time at all. They have fantastic free interactive web-based tutorials you can do. They currently offer mostly high-level/web languages such as Python and Ruby, but have recently started offering Java courses too. This is useful for aspiring mod/plugin developers as Java is the language used to code Minecraft mods and plugins.

Good luck, and happy coding!

-- Restioson

my devs are always looking for learner devs to teach and join our team if you are interested feel free to pm me for more information on the subject.

Try Udemy, and learn java. then look at tutorials for the bukkit api on youtube.