I think most of us can admit to being overwhelmed with info when we first started. And one of the biggest obstacles is information overload.
Use the link provided by Linda, that's really useful
I think the trick is to focus on one thing at a time. So it it is
SEO [search engine optimization] you are interested in, then focus on this and learn it thoruoughly, implement what you have learned before moving on to something else
There is so much to learn in this business and I have been in for about 2 years now and I am still learning.
Just one step at a time and you'll be fine
Good luck