Welcome join the custom water cooling family. Custom water cooling is a complicated system, and it is a high cost game. For beginner we don't suggest you spend too much for a trial until you know you like it. We prepared a beginner set for you to start your water cooling journey. What you need is this beginner set and a bottle of distill water from super market. The set including 1xCPU block (with LED); 1xAIO water cooling pump with res; 1x240mm radiator; 2x120mm fans; 1x water cooling drain; 1x rotating connector; 2x stopper; 6x 3/8-1/2 soft tube fittings; 2M of soft Tubing and 1 bottle of anti-biology solvent ( enough for 2L of distill water). This is almost everything you need for a basic CPU custom water cooling. Or you can top up $30 for a general GPU Water Block also. Tubing has 3 color can choose: clear, red, and white. This set is flex and expendable for future upgrade, all fittings and connects are standard G1/4 connector. Fittings and tubing is upgradable with extra cost.