Hey there Vayle,
I would support @Phillip Corcoran and also advise you to follow those links.
Although wrist straps aren't considered necessary, I would say that they are recommended. I've seen cases where people are pretty charged from the clothes that they are wearing an the hardware that they were swapping (CPU, HDD, SSD, etc.) was damaged and needed RMA.
Here are several tips on how to avoid damages:
-Avoid carpets in cool, dry areas. Leave PC cards and memory modules in their anti-static packaging until ready to be installed.
-Dissipate static electricity before handling any system components (PC cards, memory modules) by touching a grounded metal object, such as the system unit unpainted metal chassis.
-If possible, use anti-static devices, such as wrist straps and floor mats.
-Always hold a PC card or memory module by its edges. Avoid touching the contacts and components on the memory module.
-Take care when connecting or disconnecting cables. A damaged cable can cause a short in the electrical circuit.
-Prevent damage to the connectors by aligning connector pins before you connect the cable. Misaligned connector pins can cause damage to system components at power-on.
-When disconnecting a cable, always pull on the cable connector or strain-relief loop, not on the cable itself.
Hope this helps,
Captain_WD.