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As Mike said at the most simple level a laptop should have a camera and mic which will be enough to make a basic video of you playing but you will need some form of software/app on there to actually make the recording happen. There will be a learning curve here but assuming you are using a pc laptop then you will already have an app called Camera that can use your in built camera and mic to record. Here is a guide to that process that may help.
Obviously there are better ways to do this but the level of complexity steps up rather rapidly and you are better off learning the basics first then maybe if you get familiar with that, stepping up to the next level will not feel so daunting.
