Get Dixon's book. Start at the beginning and read. If you have a kit rifle, hold it, look at it, take it apart and put it back together. Once you finish the book, use it as a guideline in building your first rifle. Open it up and build the rifle as you go through the chapters. Don't worry about messing it up. You will. That's why many builders continue to build. They want to get better.
If you make a mistake, chances are you will be able to fix it. However, it may take a little time and money.
On a side note, drilling and taping a lock plate looks intimidating but is actually easy.
If you have a basic understanding of basic tools, you should do fine.
PM sent.
Brian