Since this is the "Computer Help" forum, i guess you need help for computer side of this project.
If you dont want to learn html and all related thigs, the easiest way is to use a cms system or blog system. You should decide on one of these yourself! CMS is for regular sites with thousands or hundreths of categorized content. But blogs are easier to manage for you. There can be lots of other comments about them, just research on it..
For CMS resources you can check this list and for blog resources you can check this list.
You can find lots of tutorials/help/resources for well known CMS/blog systems in these addresses. In my opinion, the best geenral purpose CMS is joomla and blog system is wordpress.