1. Documentation - linked on the left. Specifically the administration manual
2. The FAQ section - linked on the left - specifically the sections on gloassry, beginners first steps, modules, blocks and themes. There are links to visual tutorials here.
3. The search function on the top right.
Please check also the read B4U post link below if you have problems.
For Visual tutorials please go here
First you will need the news module, then set it up with the right permissions and turn on the blocks in blocks admin and set the news module as your start page.
I think an alternative is to use the spotlight module.