Learning new Technologies

I want to work on some Technologies like spring boot, Angular, Android Development and Web designing .I have some experience on these technologies. But I want to gain some more deep concept related to these things .So any person who is doing any freelancing job or working on any open source project related to these technologies .Please make me your student I just want to learn .I will give my 100% effort .You don't need to pay me anything .I will do the work whatever you will tell just to learn these things .Please help me in learning .If any body wants any help or want to help me can contact me.