How do I put these in my motherboard?

There are five main types of slots. These are ISA, PCI, AGP, PCI-Express, and PCI-X.
ISA is outdated, PCI is used for just about every non-video device, AGP is becoming a legacy graphics interface, PCI-Express is the current graphics interface, and PCI-X is for corporate servers.
The two slots you will probably use are PCI and PCI-Express. You will use AGP instead of PCI-Express if you have an AGP motherboard and an AGP graphics card, and the installation procedure is very similar.


This is the graphics card I will install.


And this is the sound card I will install.

When installing these things, remember, if it doesn't want to fit, it will not. Do not force your parts in, or else you will break them as well as your motherboard. So be very careful and insert each device one by one. It is generally easier to insert cards from bottom to top so that you can always see the slot which you are working on.
After the device fits snugly with your motherboard, screw it down in your case.
When removing an AGP or PCI Express graphics card, remember that a latch is probably securing your card. Disengage the latch before trying to pull your card out.


Installed GPU.


Installed sound card.


Everything is screwed in.