If you were to enter the following phrase into your search engine, "How to masturbate & ejaculate," a rather long list of answers to your question will be returned, some with videos of how too.
Mostly though masturbation is trial and error. You do what feels good and eventually you will ejaculate. It just may be you are to young and the hormones needed have not yet been developed. Just because you can get an erection does not mean you are fully ready to perform. [ adviceman49's advice column | Ask adviceman49 A Question ]
Attention: NOTHING on this site may be reproduced in any fashion whatsoever without explicit consent (in writing) of the owner of said material, unless otherwise stated on the page where the content originated. Search engines are free to index and cache our content. Users who post their account names or personal information in their questions have no expectation of privacy beyond that point for anything they disclose. Questions are otherwise considered anonymous to the general public.