what are the steps to become Software engineer ? how can competitive programming help me to become SW eng ?

is there a very good website like cplusplus.com in java contain everything about java 8 ?

is there any way to know if any problem required any knowledge more than i know ?

how can i know if any problem is Ad Hoc or require knowledge with any algorithms ??

there exist many people tell me this sentence when i ask for how being good coder but after made some research and practice i found that i saw red coder solve avg with 300 probs and there exist some people here in codeforce solve more 1000 prob and there are blue or above blue and never get to red !! so not only practice makes perfect i want more specific advices to reach red and i know that will take some time and i know that but i want to be on the right way can anyone advice me and small coders ?