Something else you should look into getting, before you even work on your first project, is a multimeter. It doesn't have to be anything fancy, a simple cheap multimeter can be had for a few dollars/pounds/euros. Next you will want a cheap logic probe. Then you will want to read up on how, why, and where to use them. These two tools will be the backbone for future debugging and measurement uses; without them, it would be like trying to be a carpenter without a tape measure - possible, yes, but less mistakes will be made if you have it available (some mistakes which can be expensive; sometimes even deadly).
You will also want to read up on some electronics tutorials; I have found this site to be pretty good: