• Soldering kit Instruction paper
• How to Solder
• How to Solder (video)
• A very good introduction to 'Eagle' can be found on YouTube. Start watching part 1 and click your way through. There are also good YouTube clips such as 'Learn how to solder the right way'.
• Need to decode a resistor? Check out this table.
• Render your Eagle design in 3D..
• Got an Android phone? Then you can download Electrodroidan app with easily digestible information about tonnes of electronics
  
• Creating gerber files in Eagle

Sources of inspiration:

• Instructables
• Hackaday IO

Computer Tools

• Handy circuit simulator