The UNI-T UTD2025CL Oscilloscope is ideal for beginners or students at school because of the basic specifications. It has 2 analog channels with a high sensitivity and it can process signals with a frequency up to 25MHz. The oscilloscope has digital storage and it supports plug-and-play USB storage devices. Although the memory size is a bit low it will be fast enough for your basic measurements.
The oscilloscope has an unknown price-quality ratio for 2 channels and a bandwidth of 25MHz.