This is a very nice Arduino starter kit and a great value for what you get. There is no instruction CD. I contacted the seller about this and he replied promptly. Apparently these kits have transitioned away from the CD to a web folder. On the bottom of the kit is a QR code you can scan to access the folder, along with the link itself. I went to the folder but the files were missing. There was only a "blink" pdf example in the top directory. I have reported this to the seller and made them aware of the issue. I have confidence they will get it sorted out. I don't feel this product deserves any less than 5 stars for this easily fixed issue. If you are concerned about the instruction manual you can contact the seller first to make sure the issue has been resolved. I have delt with Arduino and several other different Atmega microcontrollers for many years now. I have been programming and working with electronics all of my life. I am retired now, so that's well over 40 years. This kit is great and includes some very nice items. First, it comes with the UNO R3 board. That alone would cost around half of what this kit lists for. You get a handy breadboard power supply, an expansion board, a sonic range finder, a motor driver, an 8x8 matrix and a 1602 display. These are all nice items that don't always come with many kits. There are also quite a few different sensors, switches, buzzers, LEDs, 7 segment displays, resistors, bread boards and a 74HC595 chip. There are oodles and oodles of jumper wires, more than you'll probably ever need. It also comes with a 9v battery and battery connector. Arduino works on 5v. The battery connector connects the 9v battery to a barrel jack on the board, which is connected to an onboard voltage regulator which drops it down to 5v. I took a picture of what's included. It has everything shown except the CD. This probably sounds overwhelming, but within a month or two you will probably become familiar with everything. Soon you will probably want to add some capacitors, transistors, a few diodes and maybe a few other 7400 or 4000 series chips. The fun never ends with Arduino. You can even scrap parts out of old speakers, radios and other components. Last Christmas I was working on music playing projects. You only need 2 Arduino outputs for the speaker to play music. The rest is in the code. I have bought many of these kits. I own many Arduino boards already. I never use the actual boards in my final product. I buy the Atmega328 chip in a DIP form and use a programmer to upload the code to it. It only takes a couple of capacitors and a resistor to connect the actual 328 chip to a circuit. I use these boards for prototyping only. It took me a while to get to that point though. Some people prefer just using the boards, because it is much faster and easier. No soldering needed either. If you need a manual, the internet is full of info. Google Arduino projects or starter course. Most manuals are too basic. Also check youtube!