The first step of building a computer begins with the assembly of the most important parts of your PC - the CPU and the motherboard. You will want to check the pins on the back of the CPU first to see if they match with the ones on the motherboard before you start.
If they match, you will need to open up the ZIF socket by lifting up the steel lever on the side of the socket about 90 degrees.
Now, insert the CPU to the socket. This will be fairly easy to do. Be sure to make sure that the pins match the ones on the motherboard. If you can not stick the CPU in, turn it 90 degrees and try again until it drops into the socket easily. Push the CPU a little bit to make sure it fits inside the socket securely. Then, lock the CPU by closeing the steel lever you just opened up.
Before you start clipping the heatsink onto the CPU, you might want to apply some thermal paste between the CPU and the heatsink. This will increase the transfer rate of heat from the CPU to the heatsink, thus makes the CPU cooler.
If your heatsink already has a layer of thermal pad (gray or pink colour) on it, you can skip this step. However, it is recommended for you to use some sort of thermal compound even the very cheap ones. In my experience, adding thermal paste will cool your CPU down by about 3 degrees celcius than using the original thermal pad.
SIMM (single in-line memory module) : A memory-chip module with 72 or 30 pins that connect the module to the PC motherboard. SIMMs are normally found in older systems. They support 32-bit and 16-bit data transfers, respectively.
DIMM (dual in-line memory module) : A memory-chip module with 168 pins that connect the module to the PC motherboard. DIMMs are the most popular memory module available today. They support 64-bit data transfers. DRAM (dynamic RAM) : This older, "classic" form of RAM has been supplanted by SDRAM. DRAM stores each bit in a storage cell as an electrical charge that must be refreshed every few milliseconds to retain the information. Although less expensive than SDRAM, DRAM is also slower. EDO RAM (extended data-out RAM) : A faster form of DRAM, EDO extends the time that output data is valid, which eases timing issues between the CPU and RAM and enhances performance. EDO has now been replaced by the even faster SDRAM. SDRAM (synchronous DRAM) : The replacement for DRAM, FPM, and EDO, SDRAM synchronizes memory access with the CPU clock for faster data transfer. Basically, one block of data can be sent to the CPU while another is being prepared for access.